Small block VCR mining at Homestake

Muir, J.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 4
Publication Date: Jan 1, 1987
This report focuses on minimum ore block sizes that are economically feasible to mine with the vertical crater retreat (VCR) method. In 1985, Homestake Mining Co. began a program to bring several small block VCR stopes on line. This report examines these experimental stopes, including design parameters, ground control, drill patterns, secondary blasting, and mucking. Cost and scheduling comparisons are made with mechanized cut-and-fill and open cut- and-fill methods.
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