James Evans, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 68
U.S. industrial garnet U.S. industrial garnet
The United States presently consumes about 16 percent of global production of industrial garnet for use in abrasive airblasting, abrasive coatings, filtration media, waterjet cutting, and grinding. As of 2005, domestic garnet production has decreased from a high of 74,000 t in 1998, and imports have increased to the extent that as much as 60 percent of the garnet used in the United...
Authors
James G. Evans, Phillip R. Moyle
Composition of the Rex Chert and associated rocks of the Permian Phosphoria Formation: Soda Springs area, SE Idaho Composition of the Rex Chert and associated rocks of the Permian Phosphoria Formation: Soda Springs area, SE Idaho
This study, one in a series, reports bulk chemical and mineralogical compositions, as well as petrographic and outcrop descriptions of rocks collected from three measured outcrop sections of the Rex Chert member of the Phosphoria Formation in SE Idaho. The three measured sections were chosen from ten outcrops of Rex Chert that were described in the field. The Rex Chert overlies the Meade...
Authors
James R. Hein, Brandie McIntyre, Robert B. Perkins, David Z. Piper, James Evans
Preliminary geologic map of the Star Creek Reservoir quadrangle, Malheur County, Oregon Preliminary geologic map of the Star Creek Reservoir quadrangle, Malheur County, Oregon
No abstract available.
Authors
James G. Evans, J. J. Rytuba, G. Benjamin Binger, P. R. Hooper
Geologic map of the Little Black Canyon Quadrangle, Malheur County, Oregon Geologic map of the Little Black Canyon Quadrangle, Malheur County, Oregon
No abstract available.
Authors
James G. Evans, G. Benjamin Binger
Evaluations of plastic mesh tubes for protecting conifer seedlings from pocket gophers in three western states Evaluations of plastic mesh tubes for protecting conifer seedlings from pocket gophers in three western states
The efficacy of plastic mesh tubes for protecting conifer seedlings from pocket gopher damage was evaluated on three national forest lands in three states. In each area, cohorts of 640 protected seedlings and 640 unprotected seedlings (3,840 total) were individually monitored for damage, survival, and growth twice each summer for 5 yr after planting. Substantial differences were found...
Authors
Richard M. Engeman, Richard M. Anthony, Victor G. Barnes, Heather W. Krupa, James Evans
Geologic map of the Alder Creek Quadrangle, Malheur County, Oregon Geologic map of the Alder Creek Quadrangle, Malheur County, Oregon
No abstract available.
Authors
James G. Evans, G. Benjamin Binger
Science and Products
Filter Total Items: 68
U.S. industrial garnet U.S. industrial garnet
The United States presently consumes about 16 percent of global production of industrial garnet for use in abrasive airblasting, abrasive coatings, filtration media, waterjet cutting, and grinding. As of 2005, domestic garnet production has decreased from a high of 74,000 t in 1998, and imports have increased to the extent that as much as 60 percent of the garnet used in the United...
Authors
James G. Evans, Phillip R. Moyle
Composition of the Rex Chert and associated rocks of the Permian Phosphoria Formation: Soda Springs area, SE Idaho Composition of the Rex Chert and associated rocks of the Permian Phosphoria Formation: Soda Springs area, SE Idaho
This study, one in a series, reports bulk chemical and mineralogical compositions, as well as petrographic and outcrop descriptions of rocks collected from three measured outcrop sections of the Rex Chert member of the Phosphoria Formation in SE Idaho. The three measured sections were chosen from ten outcrops of Rex Chert that were described in the field. The Rex Chert overlies the Meade...
Authors
James R. Hein, Brandie McIntyre, Robert B. Perkins, David Z. Piper, James Evans
Preliminary geologic map of the Star Creek Reservoir quadrangle, Malheur County, Oregon Preliminary geologic map of the Star Creek Reservoir quadrangle, Malheur County, Oregon
No abstract available.
Authors
James G. Evans, J. J. Rytuba, G. Benjamin Binger, P. R. Hooper
Geologic map of the Little Black Canyon Quadrangle, Malheur County, Oregon Geologic map of the Little Black Canyon Quadrangle, Malheur County, Oregon
No abstract available.
Authors
James G. Evans, G. Benjamin Binger
Evaluations of plastic mesh tubes for protecting conifer seedlings from pocket gophers in three western states Evaluations of plastic mesh tubes for protecting conifer seedlings from pocket gophers in three western states
The efficacy of plastic mesh tubes for protecting conifer seedlings from pocket gopher damage was evaluated on three national forest lands in three states. In each area, cohorts of 640 protected seedlings and 640 unprotected seedlings (3,840 total) were individually monitored for damage, survival, and growth twice each summer for 5 yr after planting. Substantial differences were found...
Authors
Richard M. Engeman, Richard M. Anthony, Victor G. Barnes, Heather W. Krupa, James Evans
Geologic map of the Alder Creek Quadrangle, Malheur County, Oregon Geologic map of the Alder Creek Quadrangle, Malheur County, Oregon
No abstract available.
Authors
James G. Evans, G. Benjamin Binger