...the country rock may be expected to have an important influence, and so far the Ste. Genevieve and Chester formations have proved most favorable. In...coincident with degradation of the surface was observed. The Fairview and Rosirlare mines are now working well below ground-water level, and neither increase...

...have an important influence, and so far the Ste. Genevieve and other Chester formations have proveíl most favorable. In the Illinois mines nothing suggesting...surface was observed. At the Empire mine carbonates gave planto sulphides within the first hundred feet, and below that level no change was observed. In the...

...the country rock may be expected to have an important influence, and so far the Ste. Genevieve and Chester formations have proved most favorable. In...coincident with degradation of the surface was observed. The Fairview and Rosielare mines are now working well below ground-water level, and neither increase...

...the country rock may be expected to have an important influence, and so far the Ste. Genevieve and Chester formations have proved most favorable. In...coincident with degradation of the surface was observed. The Fairview and liosiclarc mines are now working well below ground-water level, and neither increase...

...in the country rock may be. expected to have an important influence, and so far the Ste. Genevieve and other Chester formations have proved most favorable....surface was observed. At the Empire mine carbonates gave placv to sulphides within the first hundred feet, and below that level no change was observed. In the...