| 000 | 01005cab a2200205 4500 | ||
|---|---|---|---|
| 001 | ABS37528 | ||
| 008 | 090401t1987 xxu||||| |||| 00| 0 eng d | ||
| 035 | _a(Sirsi) u5094 | ||
| 041 | _aeng | ||
| 100 | _aFyles, . | ||
| 245 | 4 | _aThe effects of permo-triassic strata and speed of advance on coal mining subsidence | |
| 260 | _c1987 | ||
| 350 | _a0 | ||
| 490 |
_aLand & Minerals Surveying _v5 (3) March 1987, 125-137 (12) |
||
| 520 | _aThis paper, which won the 1986 RICS Yorkshire Branch Minerals Division Prize Paper, discusses the causes of actual subsidence in excess of that predicted, based upon a subject case, involving extraction of a panel of virgin coal by longwall retreat, subsidence considerably exceeded and was not in the form predicted.The possible causes are examined under the headings of the effects of permo-triassic strata and the speed of advance. (Taken from Journal Abstract. | ||
| 650 | _aCOAL MINING | ||
| 690 | _aMINING AND MINERALS | ||
| 942 | _n0 | ||
| 948 | _c04/03/1997 | ||
| 999 |
_c3056 _d3056 |
||