This wonderful crisp and clear Keystone occupational stereo view shows workers filling the shell with nitro-glycerine in preparation to shooting the well on and oil field in Pennsylvania. The back of the view describes petroleum deposit and drilling. It also talks about the various machinery used.
This is Keystone stereo view (20058). It is in excellent condition with only one tiny spot on the back bottom left edge where the paper is rough--all text is totally readable. I only mention for full accuracy.
What a great occupational/oil field/oil drilling view.