In addition to the jeeps and trailers, small three-wheeled battery- powered scooters are used by foremen, engineers, and ... Roof Bolting Trona occurs in a nearly horizontal bed averaging about l0 feet in thickness. ... Services Two well- equipped repair shops are situated underground where mine equipment is maintained.
|Title||:||Sinking no. 3 shaft at Westvaco Trona mine, Intermountain Chemical Co., Sweetwater County, Wyo|
|Author||:||F. L. Wideman, C. A. Romano, T. Berry|