Publications

No abstract available.

No abstract available.

Arsenic levels exceeding 10 μg/L are present in hundreds of private supply wells distributed over ten counties in eastern and southeastern Michigan. Most of these wells are completed in the Mississippian Marshall Sandstone, the principal bedrock aquifer in the region, or in Pleistocene glacial or Pennsylvanian bedrock aquifers. About 70% of ground water samples taken from more than 100...

No abstract available.

Peat is a natural organic material of botanical origin and commercial significance. Peatlands are situated predominately in shallow wetland areas of the Northern Hemisphere. Commercial deposits are formed from the gradual decomposition of plant matter under anaerobic conditions over about a 5,000-year period.

The ammonia industry partially recovered from the effects of high natural gas prices that had closed a significant portion of the industry in 2001. Ammonia production capacity in the United States in 2002 was about 17.1 Mt (18.8 million st). About 53 percent of this capacity was centered in Louisiana, Oklahoma and Texas where there are large reserves of natural gas.

Hurricanes can be important agents of geomorphic change in coastal marshes and mangrove forests. Hurricanes can cause large-scale redistribution of sediments within the coastal environment resulting in sedimentation, erosion, disruption of vegetated substrates, or some combination of these processes in coastal wetlands. It has been proposed that such sediment pulsing events are important...

White phosphorus has a limited distribution in the environment because it only occurs where it has been directly used by humans. It is not transported aerially for any distance and, due to its density, has a limited ability to disperse through water. Therefore, it is not a contaminant of broad-scale concern. However, where it does occur, it can cause substantial mortality or critically...

Chrysotherapy--the treatment of rheumatoid arthritis (RA) patients with monovalent gold drugs possessing anti-inflammatory and other properties--has been used with some success for more than 70 years; however, the metabolites generated from gold drugs have not been identified positively and the mechanisms of action are not known with certainty. This account selectively reviews recent...

Part of the 2002 industrial minerals review. Production, consumption, cost, and trade data for bentonite during 2002 are presented. Predictions on bentonite markets in 2003 are also provided.

Part of the 2002 industrial minerals review. Statistics on ball clay consumption, production, prices, trade, and trends are presented.

No abstract available.