 | United States - 1983 - 1156 sivua
...water systems both during and after surface coal mining operations and during reclamation by— (A) avoiding acid or other toxic mine drainage by such measures as, but not limited toil) preventing or removing water from contact with toxic producing deposits; (il) treating drainage... | |
 | 1976 - 974 sivua
...restricting the flow of water through acid or toxic -producing minerals; treating drainage to reduce acid or toxic content which adversely affects downstream water upon being released to water courses; and casing, sealing, or otherwise treating drill holes, shafts, and wells to keep acid or toxic drainage... | |
 | 1978 - 902 sivua
...groundwater systems both during and after surface coal mining operations and during reclamation by — Avoiding acid or other toxic mine drainage by such measures as , but not limited to — 1. preventing or removing water from contact with toxic-producing deposits; 2. treating drainage... | |
 | 1976 - 760 sivua
...restricting the flow of water through, acid or toxic-producing materials; treating drainage to reduce acid or toxic content which adversely affects downstream water upon being released to water courses; and casing, sealing, or otherwise treating drill holes, shafts, and walls to keep acid or toxic drainage... | |
 | David M. Lindahl, Duane A. Thompson - 1978 - 178 sivua
...restricting the flow of water through acid or toxic-producing minerals ; treating drainage to reduce acid or toxic content which adversely affects downstream water upon being released to water courses ; and casing, sealing, or otherwise treating drill holes, shafts, and wells to keep acid or toxic drainage... | |
 | United States. Congress. Senate. Select Committee on Small Business - 1979 - 874 sivua
...water systems both during and after surface coal mining operations and during reclamation by — (A) avoiding acid or other toxic mine drainage by such measures as, but not limited to — 676 PUBLIC LAW 95-87— AUG. 3, 1977 91 STAT. 489 (i) preventing or removing water from contact... | |
 | United States. Soil Conservation Service - 1981 - 136 sivua
...mining operations and during reclamation by — (A) avoiding acid or other toxic mine drainage by such (ii) treating drainage to reduce toxic content which...downstream water upon being released to water courses; (iii) casing, sealing, or otherwise managing boreholes, shafts, and wells and keep acid or other toxic... | |
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... ground water systems both during and after surface coal mining operations and during reclamation by— (A) avoiding acid or other toxic mine drainage by such measures as, but not limited to... 
