| 发明名称 |
METHOD OF MINING AND SEPARATING COAL IN SUBSTANTIALLY VERTICAL SEAMS |
| 摘要 |
<p>Coal can be mined from a substantially vertical or steeply inclined seam by forming a cavity in the seam and filling the cavity with a magnetite slurry having a specific gravity greater than the coal being mined therefrom.</p> |
| 申请公布号 |
CA1017368(A) |
申请公布日期 |
1977.09.13 |
| 申请号 |
CA19740194586 |
申请日期 |
1974.03.11 |
| 申请人 |
CONTINENTAL OIL COMPANY |
发明人 |
POUNDSTONE, WILLIAM N.;MILLER, WILLIAM J. |
| 分类号 |
E21B10/32;E21B10/60;E21B43/29;E21C41/16 |
主分类号 |
E21B10/32 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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