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Home / Geologic Publications / Fossil Energy / Coal and Coalbed Methane / The available coal resources for eight 7.5-minute quadrangles in the Alton Coalfield, Kane County, Utah

The available coal resources for eight 7.5-minute quadrangles in the Alton Coalfield, Kane County, Utah

The available coal resources for eight 7.5-minute quadrangles in the Alton Coalfield, Kane County, Utah
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By: R. L. Bon, J. C. Quick, S. I. Wakefield, B. P. Hucka, and D. E. Tabet

Approximately 2.91 billion tons of coal are available for mining in the Alton (formerly Kanab) coalfield, Utah. This includes about 503 million tons (17%) of surface-minable coal and 2.41 billion tons (83%) of underground-minable coal. Thirty percent of the available coal identified in this study is a demonstrated resource (within 0.75 miles of a measurement location) and the remainder is less reliably identified.

The available coal resource of the Alton field includes two Dakota Formation coalbeds, the (lower) Bald Knoll and (upper) Smirl beds. Maps and associated tables showing the distribution and quantity of the available coal are provided for each coalbed in the appendix. Sixty-four percent (1.88 billion tons) of the available coal is in the Smirl coalbed, and 36% (1.04 billion tons) is in the Bald Knoll coalbed. Coal rank is subbituminous A, increasing slightly in Btu value to the west. Average sulfur content is 1% or more for both beds, which for power plant emission is more than 2 pounds sulfur per million Btu in both coalbeds, but the sulfur content is markedly lower in the Bald Knoll bed. Available data show that the in-ground coal averages 13 pounds mercury per trillion Btu.

Considering coalbed thickness (4- to 14-foot-thick beds), distribution, and current mining practices (down to depths of 3000 feet), we estimate that about 1.25 billion tons of the 2.91 billion-ton available coal resource might be recovered from the Alton coalfield. This tonnage is sufficient to satisfy Utah’s current coal consumption for about 50 years.

Other Information:
Published: 2006
Pages: 23 p.
Location: Kane County
Media Type: CD-ROM Publication

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