Coal reserves of the Pittsburgh (No.8) bed in Belmont County, Ohio

................................ Introduction ............................. Summary of reserves..................... Methods of preparing estimates of reserves............................ Classification according to characteristics of the coal.................. Rank.......................... Weight......................... Thickness..................... Overburden.................... Classification according to abundance and reliability of data............... Measured reserves .......... Indicated reserves....... ...... Inferred reserves.............. Distinction between original, remaining, and recoverable reserves.......... Methods of recording data and making calculations................ Page 1 1 1 Comparison of past and present estimates ....................... Location of Belmont County......... Topography and drainage........................ Transportation facilities........................ Settlement and industry ........................ Description of Pittsburgh coal bed in Belmont County............ ...... Area! extent................... Stratigraphy.................. Regional structure............ Thickness.................... Character. ................... Roof rock.................... Quality...................... History of mining............. Selected bibliography............... Page