...white bands. (See Pis. XI and XIII.) The shale that yields the most oil when subjected to distillation is that which weathers into massive benches of grayish-blue...former, being resistant, weathers to projecting ledges. (See PI. XIV, A.) Some of the very rich beds show a vitreous luster similar to that of coal. The massive...

...gray, bluish gray, and white bands. The shale that yields the most oil when subjected to distillation is that which weathers into massive benches of grayish-blue color but which is dark brown to SPENT 5HALE SHALE CRUSHER (6 inch) AMMONlA WATER OILS, COMBUSTIBLEOA5E5 AMMONlA «' WATER VAPOR WATER...

...gray, bluish-gray, and white bands. The shale that yields the most oil when subjected to distillation is that which weathers into massive benches of grayish-blue...former being resistant, weathers to projecting ledges. Some of the very rich beds show a vitreous luster similar to that of coal. The massive shale is exceedingly...

...gray, bluish-gray, and white bands. The shale that yields the most oil when subjected to distillation is that which weathers into massive benches of grayish-blue...former being resistant, weathers to projecting ledges. Some of the very rich beds show a vitreous luster similar to that of coal. The massive shale is exceedingly...

...partly furnished the bitumen to the shales where their skeletons are preserved. Whenever I had time to search for them, I have scarcely failed to find...resistant, weathers to projecting ledges. The massive shale is exceedingly tough, resists erosion to a remarkable degree, and weathers bluish white. Fragments...