Jurisdiction: Abandoned Mine Lands
2023 Completed Projects Archive
Completed Projects (2023)
2023 Garrison Phase 6 AML Project
This remote backfilling project stabilized abandoned underground coal mine workings along McLean County Highway 15 and homes south of Garrison. This project utilized drill holes from past drilling projects and an additional 4,060 feet of drilling was completed. Abandoned mine workings were filled with 3,491 cubic yards of flowable grout. This project was a continuation of the 2022 Exploratory Drilling and the 2022 Garrison Phase 5 AML projects. The 2022 projects revealed the extent of the underground mines in Garrison is larger than expected. Work was conducted between May 24 and June 30, 2023. The final cost for this project was $1,088,811.
2023 Exploratory Drilling AML Project
This investigatory project located and characterized underground mine workings beneath public roads and an industrial area southeast of Dickinson. Surface disturbance was minimal. Work was conducted between July 5 and August 16, 2023. The final cost for this project was $355,218.
2023 Sinkhole Filling Project
This project filled dangerous sinkholes caused by underground mine collapse on abandoned mine lands. Sinkhole filling projects like this have been conducted since the 1980s. Work was conducted on AML sites near Beulah, New Salem, and Zap between October 6 and November 22, 2023. The final cost for this project was $48,911.