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Wednesday, January 18, 2017

Enhanced coal-dependent methanogenesis coupled with algal biofuels: Potential water recycle and carbon capture

Outside Publication: International Journal of Coal Geology
Many coal beds contain microbial communities that can convert coal to natural gas (coalbed methane). Native microorganisms were obtained from Powder River Basin (PRB) coal seams with a diffusive microbial sampler placed downhole and used as an inoculum for enrichments with different nutrients to investigate microbially-enhanced coalbed methane production (MECoM)...

Tuesday, May 12, 2015

Coal Geology and Assessment of Coal Resources and Reserves in the Powder River Basin, Wyoming and Montana

USGS Publication: Professional Paper 1809
This report presents the final results of the first assessment of both coal resources and reserves for all significant coal beds in the entire Powder River Basin, northeastern Wyoming and southeastern Montana. The basin covers about 19,500 square miles, exclusive of the part of the basin within the Crow and Northern Cheyenne Indian Reservations in Montana...


Tuesday, May 12, 2015

Geospatial data for coal beds in the Powder River Basin, Wyoming and Montana

USGS Publication: Data Series 912
The purpose of this report is to provide geospatial data for various layers and themes in a Geographic Information System (GIS) format for the Powder River Basin, Wyoming and Montana. In 2015, as part of the U.S. Coal Resources and Reserves Assessment Project, the U.S. Geological Survey (USGS) completed an assessment of coal resources and reserves within the Powder River Basin, Wyoming and Montana...


Friday, December 19, 2014

Modeling uncertainty in coal resource assessments, with an application to a central area of the Gillette coal field, Wyoming

USGS Publication: SIR 2014-5196
Standards for the public disclosure of mineral resources and reserves do not require the use of any specific methodology when it comes to estimating the reliability of the resources. Unbeknownst to most intended recipients of resource appraisals, such freedom commonly results in subjective opinions or estimations based on suboptimal approaches, such as use of distance...


Monday, April 22, 2013

Coal Beds and Bedrock Geology Maps, Central Powder River Basin, Wyoming

Map Showing Principal Coal Beds and Bedrock Geology of the Ucross-Arvada Area, Central Powder River Basin, Wyoming

USGS Publication: Scientific Investigations Map 3240
The Ucross-Arvada area is part of the Powder River Basin, a large, north-trending structural depression between the Black Hills on the east and the Bighorn Mountains on the west. Almost all of the study area is within Sheridan and Johnson Counties, Wyoming.


Saturday, April 06, 2013

The effect of coal bed dewatering and partial oxidation on biogenic methane potential

Outside Publication: International Journal of Coal Geology
Coal formation dewatering at a site in the Powder River Basin was associated with enhanced potential for secondary biogenic methane determined by using a bioassay. We hypothesized that dewatering can stimulate microbial activity and increase the bioavailability of coal. We analyzed one dewatered and two water-saturated coals to examine possible ways in which dewatering influences coal bed natural gas biogenesis by looking at differences with respect to the native coal microbial community, coal-methane...


Tuesday, April 02, 2013

Coal Fields of the Conterminous United States

National Coal Resource Assessment Updated Version

USGS Publication: Open-File Report 2012–1205
This map sheet with accompanying Geographic Information System (GIS) project is an update of the existing U.S. Geological Survey (USGS) Conterminous U.S. Coal Fields map. This update was compiled using data primarily from the USGS National Coal Resource Assessment (NCRA) and information from other published maps.


Tuesday, February 26, 2013

Drill Hole Data for Coal Beds in the Powder River Basin, Montana and Wyoming

USGS Publication: Data Series 713
This report by the USGS of the Powder River Basin (PRB) of Montana and Wyoming is part of the U.S. Coal Resources and Reserves Assessment Project. Essential to that project was the creation of a comprehensive drill hole database that was used for coal bed correlation and for coal resource and reserve assessments in the PRB. This drill hole database was assembled using data from the USGS National Coal Resources Data System, several other Federal and State agencies, and selected mining companies.


Tuesday, February 26, 2013

Assessment of Coal in the Powder River Basin, Wyoming and Montana

Assessment of Coal Geology, Resources, and Reserve Base in the Powder River Basin, Wyoming and Montana

USGS Publication: Fact Sheet 2012–3143
Using a geology-based assessment methodology, the U.S. Geological Survey estimated in-place resources of 1.07 trillion short tons of coal in the Powder River Basin, Wyoming and Montana. Of that total, with a maximum stripping ratio of 10:1, recoverable coal was 162 billion tons.
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