U.S. Coal Resources and Reserves Assessment Active
The U.S. Coal Resources and Reserves Assessment Project, as part of the U.S. Geological Survey (USGS) Energy Resources Program, conducts systematic, geology-based, regional assessments of significant coal beds in major coal basins in the United States. These assessments detail the quantity, quality, location, and economic potential of the Nation’s remaining coal resources and reserves and provide objective scientific information that assists in the formulation of energy strategies, environmental policies, land-use management practices, and economic projections.
Overview
To read details regarding this project, see FS-2017-3067
The coal industry in the United States has undergone fundamental changes over the past several years that have resulted in a reduction in the number of operating coal mines, the merging or consolidation of numerous coal companies, and a drastic decrease in coal production. Since 2008, when a record of more than 1.17 billion short tons of coal were produced in the U.S., annual coal production volumes have dropped precipitously. In 2018, nearly 756 million short tons of coal were produced, according to estimates by the Energy Information Agency (EIA). Despite this reduction in annual production, the EIA projects that coal will continue to provide fuel to generate approximately 25 percent of the electricity used in the U.S. The generation of electricity continues to account for the consumption of over 92 percent of coal mined in the U.S. The use of coal to produce coke for steel making, as well as other industrial, commercial, and institutional uses, accounts for the remainder of U.S. coal consumption.
There are numerous coal beds, of varying thickness, extent, and quality, in coal fields and basins spread throughout the U. S. - these compose the total coal resources of the nation. However, not all the total coal resources can be extracted. The portion of the total coal resources that may be able to be extracted are defined as recoverable coal resources. Recoverable coal resources are calculated by subtracting coal resources lost due to previous mining activities, exposure to weathering along outcrops, geological conditions, environmental, land use, or societal restrictions, and mining technology limitations from the total coal resources.
Reserves are the portion of the recoverable coal resources that can be extracted economically at a time of classification. The portion of recoverable coal resources that can be defined as reserves will vary over time, based on fluctuations in mining costs, differences in mining methods, and the market value of the coal.
In energy assessments, it is important to estimate not only the total coal resources, but to inventory the recoverable coal resources and coal reserves as well. Estimating the available coal resources and reserves provides a more accurate appraisal of how much of the total U.S. coal resources are realistically available for extraction in the future.
There is often confusion in the use of the terms coal “resources” and “reserves”. The two terms are often used interchangeably, but there are significant differences in their definitions. The terms are defined, from USGS Circular 891, as follows:
Coal resources – include in-place tonnage estimates that are determined by summing the volumes for identified and undiscovered coal deposits, utilizing a specified minimum thickness.
Coal reserves – are a subset of coal resources that are classified as economically extractable at the time of classification, after considering environmental, legal, and technological constraints. The facilities for extraction do not need to be in place or operative at the time of classification.
To be classified as economically extractable, the current market value of the extracted coal must be greater than the total cost to extract it.
The task of the U.S. Coal Resources and Reserves Assessment Project is to conduct a systematic determination of recoverable coal resources and reserves, on a regional basis for all major coal provinces in the United States. This differentiates the current coal assessment project from previous generations of coal assessment projects, in which typically only total coal resources were calculated.
The Project is focused on defining coal resources and reserves in the Northern Great Plains and Rocky Mountain Coal Provinces, with an emphasis on determining coal resources and reserves on Federal lands. The first U.S. coal basin to be evaluated was the Powder River Basin (PRB) in Wyoming and Montana, because it has been the most productive coal basin in the United States over the past 25 years. The results of the PRB assessment were published in Professional Paper 1809 in 2015.
Currently, assessment studies in three separate areas of the Greater Green River Basin have been started – an assessment of the Little Snake River coal field and Red Desert area (in south-central Wyoming) is nearly completed; an assessment of the Yampa coal field in northwest Colorado is ongoing; an assessment of the eastern portion of the Rock Springs Uplift coal field in Wyoming is also ongoing. The Greater Green River Basin was prioritized for assessment because it contains vast land areas controlled by the Federal government, large portions of the basin have not been formally assessed for coal resources, and previously proprietary drill hole data have become available for use in geologic modeling and economic evaluations.
Assessment priorities are being adjusted in response to changes in coal utilization patterns and markets. Metallurgical coal and export coal products are increasing their market share, while thermal coals, used for domestic electric power generation are decreasing. Areas under consideration for future assessment are the Raton Basin (metallurgical coal), Grand Staircase/Escalante (metallurgical coal), the Piceance Basin (thermal coal), and the Williston Basin (thermal coal).
As part of the USGS Energy Resources Program, the U.S. Coal Resources and Reserves Assessment Project research efforts yield state-of-the art, digitally-based assessments that detail the quantity, quality, location, and accessibility of the Nation’s coal resources and reserves. Recent software updates to state-of-the-art database and geologic modeling packages are enhancing the quality of current assessment studies.
Current Coal Assessment Studies Methodologies:
An External Peer Review of the U.S. Geological Survey Energy Resource Program’s Economically Recoverable Coal Resource Assessment Methodology was conducted in 2005, utilizing experts from industry, academia, and other government agencies. This peer review is available at: Open-File Report 2005-1076
The methodology currently utilized by the U.S. Coal Resources and Reserves Assessment Project can be divided into three distinct phases – data collection, data modeling, and calculation of resources and reserves. A generalized outline of the methodology utilized is shown below:
Phase I: Data collection
1. geologic–drill holes, measured sections, geophysical data – that show coal bed thicknesses, partings, interburden/overburden lithologies, or structure.
2. restrictions–data that define factors that affect extraction of coal – environmental, land use, legal, and/or technical restrictions.
3. societal–data defining state, county, and municipal boundaries, surface property ownership and usage, and coal and other mineral estate ownership.
4. coal quality–data points that provide information on coal quality parameters.
5. coal economics–data on coal market prices and costs related to equipment, operations, and facilities.
Phase II: Data modeling
1. correlation–establishing the stratigraphic position and lateral continuity of individual coal beds within the assessment area.
2. geologic models–incorporate the available geologic data, correlations, and structural features for each coal bed into a geologic model. Determine which coal beds have the thickness, extent, and lateral continuity to be designated as significant–for resources and reserves calculation purposes.
3. GIS models-utilize GIS capabilities to model restrictions and societal data to determine areas where coal extraction is not possible.
4. Composite model–combine geologic and GIS models to produce a composite model of the geology, restrictions, and societal features.
Phase III: Calculating resources and reserves
1. resources calculations-use composite model to: a. calculate original resources for all significant coal beds b. calculate recoverable resources for all significant coal beds
2. projected mine costs-utilize coal economics data to develop mining costs through economic studies.
3. cost curve graphs-utilize estimated mining costs and coal market pricing data to generate cost curve graphs.
4. reserves determination-interpreted from the cost curve graphs for all significant coal beds.
Related Links
USGS Links
USGS Frequently Asked Questions (FAQ) Pertaining to "Coal"
External Links
ASTM Committee D05 on Coal and Coke
U.S. Department of Energy Clean Coal Initiative
U.S. Energy Information Administration
International Committee for Coal & Organic Petrology (ICCP)
The Society for Organic Petrology (TSOP)
Society for Mining, Metallurgy, and Exploration (SME) – www.smenet.org
National Mining Association (NMA) – https://nma.org
Greater Green River Basin, Wyoming and Colorado Coal Assessment
The Greater Green River Basin (GGRB) is a large, irregularly shaped, intermontane desert basin in the Rocky Mountain coal region. The basin spans are large region encompassing southwestern and south-central Wyoming and northwestern Colorado. The GGRB contains several coal fields of economic importance and there are several active coal mines in the basin, utilizing both surface and underground mining methods. The structural geology is relatively complex, with intra-basin anticlinal features dividing the GGRB into several sub-basins. The coal beds in the GGRB were deposited in fluvial/deltaic and lacustrine paleoenvironments and are Late Cretaceous, Paleocene, and Eocene in Age.
Because of its areal extent, the Greater Green River Basin has been divided into three separate assessments – Little Snake River coal field and Red Desert area (WY), Yampa coal field (CO), and Rock Springs Uplift coal field (WY). The Greater Green River Basin was prioritized for assessment because it contains vast land areas controlled by the Federal government, large portions of the basin have not been formally assessed for coal resources, and previously proprietary drill hole data have become available for use in geologic modeling and economic evaluations.
The coal resources and reserves assessment of the GGRB is part of the current generation of U.S. coal assessments that not only define the total coal resources, but also systematically determine the available coal resources and reserves for a region or basin. The determination of available coal resources show what coal may be available for extraction after environmental, land use, and technological restrictions are applied to the total coal resources. The determination of reserves from the available coal resources shows what coal is currently available to be economically extracted, based on market conditions and projected mining costs. Determining available coal resources and reserves are important factors to be considered in the development of a national energy policy and for providing energy security for the United States.
Powder River Basin, Wyoming Coal Assessment
In 2009, the USGS completed the first digital National Coal Resource Assessment (NCRA) of in-place coal resources. The current generation of U.S. coal assessments will not only be a refinement of the coal resources, but also the systematic determination of the regional coal reserve base in all the major coal provinces in the U.S. The reserve base provides not only estimates of coal resources that are currently economic (reserves), but what may become economic with current technologies (recoverable resources), which is important from a national energy security and policy standpoint. The first U.S. coal basin to be evaluated in this new assessment phase is the Powder River Basin, WY (PRB). The PRB is the single most important coal basin in the U.S. production-wise, supplying over 42 percent of the total coal produced in the U.S. in 2012.
USGS Professional Paper 1809, Coal Geology and Assessment of Coal Resources and Reserves in the Powder River Basin, Wyoming and Montana, was published in 2015. It is the compilation of four USGS Open File Reports into a single publication, covering four different assessment areas in the PRB. Professional Paper 1809 provides an overview of the geology and reports the original resources for the entire PRB, as well as the available coal resources and reserves.
Coal Quality
The USGS Energy Resources Program researches and provides studies on the quantity, quality, and location of the Nation’s coal resources and has world class research facilities investigating coal petrology and coal quality. These studies address coal extraction, utilization and disposal issues, human health and environmental impact issues, and identify suitable resources for the Nation’s electric power generation.
Coal Databases
The U.S. Geological Survey Energy Resources Program has developed coal databases to monitor the location, quantity, and physical and chemical characteristics of U.S. coal and coal-related deposits.
Below are data or web applications associated with this project.
Below are publications associated with this project.
Assessing U.S. coal resources and reserves
Geographic information system (GIS) representation of coal-bearing areas in India and Bangladesh
The National Coal Resource Assessment Overview
ArcView Coal Evaluation User's Guide
Preliminary estimate of coal resources in the Gillette coalfield affected by the location of the Burlington Northern/Union Pacific joint mainline railroad
An external peer review of the U.S. Geological Survey energy resource program's economically recoverable coal resource assessment methodology - report and comments
Geologic Assessment of Coal in the Colorado Plateau: Arizona, Colorado, New Mexico, and Utah
Calculation of coal resources using ARC/INFO and Earth Vision; methodology for the National Coal Resource Assessment
Federal Coal in the United States: A Digital Database of Coal Ownership Status
Coal fields and federal lands of the conterminous United States
Assessment of the coal resources of the Kyrgyz Republic; coal character and distribution, geology, mining, and importance to the nation's future
Coal resources in environmentally-sensitive lands under federal management
Coal resource classification system of the U.S. Bureau of Mines and U.S. Geological Survey
Below are software products associated with this project.
Assessments Evolved: USGS Coal Research in the 21st Century
Although often associated with helping fuel the Nation’s growth during the Industrial Revolution, coal is very much part of our space-age present. In 2016, coal-fired power plants provided 30.4 percent of the country’s electricity, and it is an important source of employment in many states.
- Overview
The U.S. Coal Resources and Reserves Assessment Project, as part of the U.S. Geological Survey (USGS) Energy Resources Program, conducts systematic, geology-based, regional assessments of significant coal beds in major coal basins in the United States. These assessments detail the quantity, quality, location, and economic potential of the Nation’s remaining coal resources and reserves and provide objective scientific information that assists in the formulation of energy strategies, environmental policies, land-use management practices, and economic projections.
Overview
To read details regarding this project, see FS-2017-3067
The coal industry in the United States has undergone fundamental changes over the past several years that have resulted in a reduction in the number of operating coal mines, the merging or consolidation of numerous coal companies, and a drastic decrease in coal production. Since 2008, when a record of more than 1.17 billion short tons of coal were produced in the U.S., annual coal production volumes have dropped precipitously. In 2018, nearly 756 million short tons of coal were produced, according to estimates by the Energy Information Agency (EIA). Despite this reduction in annual production, the EIA projects that coal will continue to provide fuel to generate approximately 25 percent of the electricity used in the U.S. The generation of electricity continues to account for the consumption of over 92 percent of coal mined in the U.S. The use of coal to produce coke for steel making, as well as other industrial, commercial, and institutional uses, accounts for the remainder of U.S. coal consumption.
There are numerous coal beds, of varying thickness, extent, and quality, in coal fields and basins spread throughout the U. S. - these compose the total coal resources of the nation. However, not all the total coal resources can be extracted. The portion of the total coal resources that may be able to be extracted are defined as recoverable coal resources. Recoverable coal resources are calculated by subtracting coal resources lost due to previous mining activities, exposure to weathering along outcrops, geological conditions, environmental, land use, or societal restrictions, and mining technology limitations from the total coal resources.
Reserves are the portion of the recoverable coal resources that can be extracted economically at a time of classification. The portion of recoverable coal resources that can be defined as reserves will vary over time, based on fluctuations in mining costs, differences in mining methods, and the market value of the coal.
In energy assessments, it is important to estimate not only the total coal resources, but to inventory the recoverable coal resources and coal reserves as well. Estimating the available coal resources and reserves provides a more accurate appraisal of how much of the total U.S. coal resources are realistically available for extraction in the future.
There is often confusion in the use of the terms coal “resources” and “reserves”. The two terms are often used interchangeably, but there are significant differences in their definitions. The terms are defined, from USGS Circular 891, as follows:
Coal resources – include in-place tonnage estimates that are determined by summing the volumes for identified and undiscovered coal deposits, utilizing a specified minimum thickness.
Coal reserves – are a subset of coal resources that are classified as economically extractable at the time of classification, after considering environmental, legal, and technological constraints. The facilities for extraction do not need to be in place or operative at the time of classification.
To be classified as economically extractable, the current market value of the extracted coal must be greater than the total cost to extract it.
The task of the U.S. Coal Resources and Reserves Assessment Project is to conduct a systematic determination of recoverable coal resources and reserves, on a regional basis for all major coal provinces in the United States. This differentiates the current coal assessment project from previous generations of coal assessment projects, in which typically only total coal resources were calculated.
The Project is focused on defining coal resources and reserves in the Northern Great Plains and Rocky Mountain Coal Provinces, with an emphasis on determining coal resources and reserves on Federal lands. The first U.S. coal basin to be evaluated was the Powder River Basin (PRB) in Wyoming and Montana, because it has been the most productive coal basin in the United States over the past 25 years. The results of the PRB assessment were published in Professional Paper 1809 in 2015.
Currently, assessment studies in three separate areas of the Greater Green River Basin have been started – an assessment of the Little Snake River coal field and Red Desert area (in south-central Wyoming) is nearly completed; an assessment of the Yampa coal field in northwest Colorado is ongoing; an assessment of the eastern portion of the Rock Springs Uplift coal field in Wyoming is also ongoing. The Greater Green River Basin was prioritized for assessment because it contains vast land areas controlled by the Federal government, large portions of the basin have not been formally assessed for coal resources, and previously proprietary drill hole data have become available for use in geologic modeling and economic evaluations.
Assessment priorities are being adjusted in response to changes in coal utilization patterns and markets. Metallurgical coal and export coal products are increasing their market share, while thermal coals, used for domestic electric power generation are decreasing. Areas under consideration for future assessment are the Raton Basin (metallurgical coal), Grand Staircase/Escalante (metallurgical coal), the Piceance Basin (thermal coal), and the Williston Basin (thermal coal).
As part of the USGS Energy Resources Program, the U.S. Coal Resources and Reserves Assessment Project research efforts yield state-of-the art, digitally-based assessments that detail the quantity, quality, location, and accessibility of the Nation’s coal resources and reserves. Recent software updates to state-of-the-art database and geologic modeling packages are enhancing the quality of current assessment studies.
Current Coal Assessment Studies Methodologies:
An External Peer Review of the U.S. Geological Survey Energy Resource Program’s Economically Recoverable Coal Resource Assessment Methodology was conducted in 2005, utilizing experts from industry, academia, and other government agencies. This peer review is available at: Open-File Report 2005-1076
The methodology currently utilized by the U.S. Coal Resources and Reserves Assessment Project can be divided into three distinct phases – data collection, data modeling, and calculation of resources and reserves. A generalized outline of the methodology utilized is shown below:
Phase I: Data collection
1. geologic–drill holes, measured sections, geophysical data – that show coal bed thicknesses, partings, interburden/overburden lithologies, or structure.
2. restrictions–data that define factors that affect extraction of coal – environmental, land use, legal, and/or technical restrictions.
3. societal–data defining state, county, and municipal boundaries, surface property ownership and usage, and coal and other mineral estate ownership.
4. coal quality–data points that provide information on coal quality parameters.
5. coal economics–data on coal market prices and costs related to equipment, operations, and facilities.
Phase II: Data modeling
1. correlation–establishing the stratigraphic position and lateral continuity of individual coal beds within the assessment area.
2. geologic models–incorporate the available geologic data, correlations, and structural features for each coal bed into a geologic model. Determine which coal beds have the thickness, extent, and lateral continuity to be designated as significant–for resources and reserves calculation purposes.
3. GIS models-utilize GIS capabilities to model restrictions and societal data to determine areas where coal extraction is not possible.
4. Composite model–combine geologic and GIS models to produce a composite model of the geology, restrictions, and societal features.
Phase III: Calculating resources and reserves
1. resources calculations-use composite model to: a. calculate original resources for all significant coal beds b. calculate recoverable resources for all significant coal beds
2. projected mine costs-utilize coal economics data to develop mining costs through economic studies.
3. cost curve graphs-utilize estimated mining costs and coal market pricing data to generate cost curve graphs.
4. reserves determination-interpreted from the cost curve graphs for all significant coal beds.
Related Links
USGS Links
USGS Frequently Asked Questions (FAQ) Pertaining to "Coal"
External Links
ASTM Committee D05 on Coal and Coke
U.S. Department of Energy Clean Coal Initiative
U.S. Energy Information Administration
International Committee for Coal & Organic Petrology (ICCP)
The Society for Organic Petrology (TSOP)
Society for Mining, Metallurgy, and Exploration (SME) – www.smenet.org
National Mining Association (NMA) – https://nma.org
Greater Green River Basin, Wyoming and Colorado Coal Assessment
The Greater Green River Basin (GGRB) is a large, irregularly shaped, intermontane desert basin in the Rocky Mountain coal region. The basin spans are large region encompassing southwestern and south-central Wyoming and northwestern Colorado. The GGRB contains several coal fields of economic importance and there are several active coal mines in the basin, utilizing both surface and underground mining methods. The structural geology is relatively complex, with intra-basin anticlinal features dividing the GGRB into several sub-basins. The coal beds in the GGRB were deposited in fluvial/deltaic and lacustrine paleoenvironments and are Late Cretaceous, Paleocene, and Eocene in Age.
Because of its areal extent, the Greater Green River Basin has been divided into three separate assessments – Little Snake River coal field and Red Desert area (WY), Yampa coal field (CO), and Rock Springs Uplift coal field (WY). The Greater Green River Basin was prioritized for assessment because it contains vast land areas controlled by the Federal government, large portions of the basin have not been formally assessed for coal resources, and previously proprietary drill hole data have become available for use in geologic modeling and economic evaluations.
The coal resources and reserves assessment of the GGRB is part of the current generation of U.S. coal assessments that not only define the total coal resources, but also systematically determine the available coal resources and reserves for a region or basin. The determination of available coal resources show what coal may be available for extraction after environmental, land use, and technological restrictions are applied to the total coal resources. The determination of reserves from the available coal resources shows what coal is currently available to be economically extracted, based on market conditions and projected mining costs. Determining available coal resources and reserves are important factors to be considered in the development of a national energy policy and for providing energy security for the United States.
Powder River Basin, Wyoming Coal Assessment
In 2009, the USGS completed the first digital National Coal Resource Assessment (NCRA) of in-place coal resources. The current generation of U.S. coal assessments will not only be a refinement of the coal resources, but also the systematic determination of the regional coal reserve base in all the major coal provinces in the U.S. The reserve base provides not only estimates of coal resources that are currently economic (reserves), but what may become economic with current technologies (recoverable resources), which is important from a national energy security and policy standpoint. The first U.S. coal basin to be evaluated in this new assessment phase is the Powder River Basin, WY (PRB). The PRB is the single most important coal basin in the U.S. production-wise, supplying over 42 percent of the total coal produced in the U.S. in 2012.
USGS Professional Paper 1809, Coal Geology and Assessment of Coal Resources and Reserves in the Powder River Basin, Wyoming and Montana, was published in 2015. It is the compilation of four USGS Open File Reports into a single publication, covering four different assessment areas in the PRB. Professional Paper 1809 provides an overview of the geology and reports the original resources for the entire PRB, as well as the available coal resources and reserves.
Coal Quality
The USGS Energy Resources Program researches and provides studies on the quantity, quality, and location of the Nation’s coal resources and has world class research facilities investigating coal petrology and coal quality. These studies address coal extraction, utilization and disposal issues, human health and environmental impact issues, and identify suitable resources for the Nation’s electric power generation.
Coal Databases
The U.S. Geological Survey Energy Resources Program has developed coal databases to monitor the location, quantity, and physical and chemical characteristics of U.S. coal and coal-related deposits.
- Data
Below are data or web applications associated with this project.
- Publications
Below are publications associated with this project.
Assessing U.S. coal resources and reserves
The U.S. Coal Resources and Reserves Assessment Project, as part of the U.S. Geological Survey (USGS) Energy Resources Program, conducts systematic, geology-based, regional assessments of significant coal beds in major coal basins in the United States. These assessments detail the quantity, quality, location, and economic potential of the Nation’s remaining coal resources and reserves and provideAuthorsBrian N. ShafferFilter Total Items: 36Geographic information system (GIS) representation of coal-bearing areas in India and Bangladesh
Geographic information system (GIS) information may facilitate energy studies, which in turn provide input for energy policy decisions. Prior to this study, no GIS file representing the occurrence of coal-bearing units in India or Bangladesh was known to exist. This Open-File Report contains downloadable shapefiles representing the coalfields of India and Bangladesh and a limited number of chemicaAuthorsMichael H. Trippi, Susan J. TewaltThe National Coal Resource Assessment Overview
The U.S. Geological Survey (USGS) has completed the National Coal Resource Assessment (NCRA), a multiyear project by the USGS Energy Resources Program, in partnership with State geological surveys in the coal producing regions of the United States. The NCRA is the first digital national coal-resource assessment. Coal beds and zones were assessed in five regions that account for more than 90 percenAuthorsBrenda S. Pierce, Kristin O. DennenArcView Coal Evaluation User's Guide
Purpose: The objective of the ArcView Coal Evaluation (ACE) is to estimate the amount and location of coal available to be mined by various coal mining technologies, based on the geologic coverages developed in the National Coal Resource Assessment (NCRA) which are the starting coverages used in the Geographic Information Systems (GIS) evaluation of coal resources. The ACE Users Guide providesAuthorsWilliam WatsonPreliminary estimate of coal resources in the Gillette coalfield affected by the location of the Burlington Northern/Union Pacific joint mainline railroad
This publication, primarily in graphic form, presents a preliminary resource assessment related to a major, near-term restriction to mining in that portion of the Gillette coalfield, Wyoming, that is traversed by the Burlington Northern/Union Pacific joint mainline railroad. This assessment is part of a current Powder River Basin regional coal assessment, including both resources and reserves, beiAuthorsTimothy J. Rohrbacher, Jon E. Haacke, David C. Scott, Lee M. Osmonson, James A. LuppensAn external peer review of the U.S. Geological Survey energy resource program's economically recoverable coal resource assessment methodology - report and comments
No abstract available.AuthorsTimothy J. Rohrbacher, James A. Luppens, Lee M. Osmonson, David C. Scott, Philip A. FreemanGeologic Assessment of Coal in the Colorado Plateau: Arizona, Colorado, New Mexico, and Utah
This CD-ROM set contains a geologic assessment of coal deposits of the Colorado Plateau region and new resource estimates for selected assessment units within the Colorado Plateau. Original resource estimates (in-place resources before production) for the 12 priority assessment units of the Colorado Plateau exceed one half trillion short tons of coal in beds greater than 1 ft thick and under lessAuthorsLauara N.R. Roberts, Laura BiewickCalculation of coal resources using ARC/INFO and Earth Vision; methodology for the National Coal Resource Assessment
This report documents a comparison of two methods of resource calculation that are being used in the National Coal Resource Assessment project of the U.S. Geological Survey (USGS). Tewalt (1998) discusses the history of using computer software packages such as GARNET (Graphic Analysis of Resources using Numerical Evaluation Techniques), GRASS (Geographic Resource Analysis Support System), and theAuthorsL.N. Roberts, L.R. BiewickFederal Coal in the United States: A Digital Database of Coal Ownership Status
As United States coal resources continue to be examined for potential development, a critical need exists for a digital database containing locations and status of all Federal coal resources. This Fact Sheet describes the development of such a digital database and presents examples of how the U.S. Geological Survey (USGS) has used these coal ownership data. This database and its products are desigAuthorsCoal fields and federal lands of the conterminous United States
The map depicts the relationship of coal and public lands in the conterminous U. S. Multiple GIS layers are being created for the purpose of deriving estimates of how much coal is owned and administered by the Federal government. Federal coal areas have a profound effect on land-management decisions. Regulatory agencies attempt to balance energy development with alternative land-use and environmenAuthorsLaura BiewickAssessment of the coal resources of the Kyrgyz Republic; coal character and distribution, geology, mining, and importance to the nation's future
No abstract available.AuthorsEdwin R. Landis, N. H. Bostick, H.J. Gluskoter, C.D. Harrison, D.W. Huber, E. A. JohnsonCoal resources in environmentally-sensitive lands under federal management
This report presents estimates of coal-bearing acreage and coal tonnage in environmentally-sensitive areas. The analysis was conducted to provide data for rulemaking by the Federal Office of Surface Mining (Watson and others, 1995). The rulemaking clarifies conditions under which coal can be mined in environmentally-sensitive areas. The area of the U.S. is about 2.3 billion acres. Contained wiAuthorsWilliam D. Watson, John K. Tully, Edward N. Moser, David P. Dee, Karen Bryant, Richard Schall, Harold A. AllanCoal resource classification system of the U.S. Bureau of Mines and U.S. Geological Survey
No abstract available.Authors - Web Tools
- Software
Below are software products associated with this project.
- News
Assessments Evolved: USGS Coal Research in the 21st Century
Although often associated with helping fuel the Nation’s growth during the Industrial Revolution, coal is very much part of our space-age present. In 2016, coal-fired power plants provided 30.4 percent of the country’s electricity, and it is an important source of employment in many states.