Laboratory tests of suspension roof support materials and devices.

2026-04-22T03:29:33Z

Creator Personal:

Spindler, G. R.

Title:

Laboratory tests of suspension roof support materials and devices.

Call Number:

P41

Date:

undated

Description:

Typescript. Paper stamped: West Virginia Collection, Aug 9, 1952.

Subject Topical:

Coal mines and mining--Safety measures., Mine roof control.

All:

Mine roof control., Coal mines and mining--Safety measures.