Search U.S. government technical reports digitized or harvested by TRAIL.
Talc in fire-resistant paint
Talc mining and milling at Madoc, Ontario
The mining and preparation of Tripoli
Talc and soapstone
The talc industry in 1920
Bentonite
Soapstone
Feldspar mining and milling :near Keene, New Hampshire
Silica
Conditions in the feldspar industry
Epsomite