1988 - Settlement Agreement between the National Wildlife Federation and Kentucky added financial support from the Office of Surface Mining.
1989 - Abandoned Mine Land Emergency Response Office opened in Ashland, Kentucky.
1990 - Settlement agreement with environmental groups signed, ending 10 years of controversy and litigation over the "two-acre exemption." which was repealed in 1987.
1991 - Title IV revised and the collection of fees extended until 9/30/95, interest will accrue on the Fund's unappropriated balance, small operator tonnage definition increased from 100,000 to 300,000 tons, funds may be used to reclaim interim-program sites, and states may established trust funds for acid mine drainage programs.