Published by US Bureau of Mines, Washington DC, 1982
Seller: Liberty Book Shop, Avis, PA, U.S.A.
Condition: Very Good. Dust Jacket Condition: No Dust Jacket. Lg softbound pamphlet, , sl dampmark at spine. Institutional stamp on front cover, very clean. Bureau of Mines Report of Investigatons #8707; SC, sm 4to; 8 pages.