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Overbreak control in the White Pine underground copper mine.

Authors
Fletcher-LF; Plis-MN; Stachura-VJ
Source
Skillings' Min Rev 1990 Aug; :4-7
NIOSHTIC No.
10008393
Abstract
A major problem with commonly used controlled blasting techniques is the additional time and cost required to drill and load the relatively closely spaced, lightly charged roof and rib holes. Some mine personnel have been observed to be reluctant to deviate from their established blasting procedures, citing a variety of reasons. To promote blasting practices that reduce overbreak, the U.S. Bureau of Mines decided to investigate the possibility that overbreak could be reduced by making only minor changes in a mine's standard blast design. To that end, a cooperative agreement was signed with Copper Range Company to conduct a series of blasting tests in the production headings of its White Pine underground copper mine.
Publication Date
19900801
Document Type
OP; Journal Article
Fiscal Year
1990
NTIS Accession No.
NTIS Price
Identifying No.
OP 222-90
ISSN
0037-6329
NIOSH Division
TCRC
Source Name
Skillings' Mining Review
State
MN
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