Mine-shaft equipment

Eaton, L. | Engineering Index Backfile | 1932

Well Abandonment

Online Contents | 1997

Shaft fires -- Magma mine

Gardner, E.D. / Parker, D.J. | Engineering Index Backfile | 1928

Steel mine shaft construction

Woodworth, R.B. | Engineering Index Backfile | 1911

Fireproof shaft, Vermillion mine

Allard, A.F. | Engineering Index Backfile | 1912