Sc_box MTU 2
Container
Contains 1 Result:
Frederick W. Sperr Correspondence
Collection — sc_box: MTU 2, Folder: 8
Identifier: MTU-135
Abstract
Correspondence, 1906-1911, between Professor Frederick W. Sperr of the Michigan College of Mines in Houghton, Michigan and the Grand Rapids Plaster Company, a gypsum mining company in Grand Rapids, Michigan. Sperr was contacted as a consultant for the company regarding several cave-ins of the roof and falling rock that the mine was experiencing.
Dates:
1906-1911