RIPPING MACHINE DEVELOPMENTS AND SUBSEQUENT DIRT DISPOSAL.

被引：0
|
作者：
Clark, C.A. [1 ]
机构：
[1] British Coal, Engl, British Coal, Engl
来源：
Colliery guardian Redhill | 1986年 / 234卷 / 12期
关键词：
COAL MINES AND MINING - Drills;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This article reviews the range of applications of these machines. As the number of advancing faces has been reduced, the problem of disposal or ripping dirt has become less acute. In analyzing the current distribution of packing methods the paper also examines the scope for future dirt retention.
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页码：551 / 552
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