...be undertaken, well in advance of regular mining. Some method of boring could possibly be utilized to determine the- position and the nature of the strata...could be successfully carried on by stripping the overlying gravel and shales from the coal, where not of too great depth, a method that has been somewhat...

...be undertaken, well in advance of regular mining. Some method of boring could possibly be utilized to determine the position and the nature of the strata...could be successfully carried on by stripping the overlying gravel and shales from the coal, where not of too great depth, a method that has been somewhat...

...should be undertaken well in advance of regular mining. Some method of boring could possibly be utilized to determine the position and the nature of the strata...impossible to define the limits of the several coal areas with any degree of accuracy. It is possible that in certain cases mining could be successfully carried...

..... % 7.90 % 36.64 % 42.06 % 13.40 No. 2 — 6 . 2 feet banded coal and shale 7.39 31.88 28.07 32.66 and the nature of the strata underlying the great...impossible to define the limits of the several coal areas with any degree of accuracy. It is possible that in certain cases mining could be successfully carried...

...— 1 • 8 feet fairly clean coal ... 2 — 6-2 feet banded coal and shale 7-39 31-88 28-07 32-66 and the nature of the strata underlying the great...impossible to define the limits of the several coal areas with any degree of accuracy. It is possible that in certain cases mining could be successfully carried...