TY  - RPRT
TI  - Effectiveness of the addition of alkaline materials at surface coal mines in preventing or abating acid mine drainage--Part 1. Geochemical considerations
AU  - Charles A. Cravotta
AU  - Keith Brady
AU  - Michael W. Smith
AU  - Richard L. Beam
PY  - 1990
UR  - https://pubs.usgs.gov/publication/70189559
ID  - 70189559
ER  -