Coal and Gas Resources of the Lower Hartshorne Coalbed in Leflore and Haskell Counties, Oklahoma.
Abs With Programs Geol Soc of Am 1977 Jan; 9(1):65-66
The lower Hartshorne coalbed in a 600-sq-mi area in Leflore and Haskell Counties contains at least 1 trillion cu ft of methane. Based on 900 coal data points, it is estimated that approximately 2.0 billion tons of the original coal resources remain. Resources calculated were within 2 miles of any datum point and were contained in beds more than 12 inches thick and 2,000 ft deep or less. This new calculation of coal resources was required to obtain an accurate data base for calculating the methane content of the lower Hartshorne coalbed.
Abs. With Programs, Geol. Soc. of Am., V. 9, No. 1, January 1977, PP. 65-66