Jurisdiction: Abandoned Mine Lands
2016 Completed Projects Archive
2016 Wilton Phase 2 AML Project
The objectives of this project were to drill holes to locate underground mine workings and to pump a cementitious grout through these holes to fill the mine voids and reduce the likelihood of collapse. This project involved drilling and pumping pressurized grout into collapsed underground mine workings near the city of Wilton, ND. There were two contracts for this project, one for construction and one for material testing and the combined contract costs were $1,420,907.
2016 Wilton Phase 2 Project Summary
2016 Bowman Foxhole AML Project
This ten-acre project eliminated about 1100 feet of dangerous highwalls at an abandoned surface mine site located on either side of a public road (78th Street SW) about six miles north of Bowman, ND. The contract cost was $90,447.
2015 Sinkhole Filling AML Project
The objective of this two-year project was to fill hazardous sinkholes resulting from the collapse of underground coalmines. Approximately 207 sinkholes were filled in 2015 and another 138 were filled in 2016. In addition, two emergency coal fires were extinguished under this contract (see 2015 Emergency Projects Archive). The contract cost was $201,246.96.