# Relationship history for MSHA mine 2402634

Current hierarchy: **Black Mountain Resources Ltd → ABM Mining Corp. → New Departure Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Greg  Stewart et al → New Departure Mine; 2010-02-03 to 2013-09-04; source msha-controller-operator-history
- **controller_controls_mine:** Black Mountain Resources Ltd → New Departure Mine; 2012-07-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** ABM Mining Corp. → New Departure Mine; 2012-09-11 to 2013-03-27; source msha-controller-operator-history
- **controller_controls_operator:** Black Mountain Resources Ltd → ABM Mining Corp.; 2012-09-11 to 2013-03-27; source msha-controller-operator-history
- **operator_operates_mine:** United Mine services → New Departure Mine; 2013-03-28 to 2013-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Stewart et al → United Mine services; 2013-03-28 to 2013-09-04; source msha-controller-operator-history
- **controller_controls_mine:** United Silver Corp → New Departure Mine; 2013-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United Silver Corp → United Mine services; 2013-09-05 to 2013-09-29; source msha-controller-operator-history
- **operator_operates_mine:** ABM Mining Corp. → New Departure Mine; 2013-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Black Mountain Resources Ltd → ABM Mining Corp.; 2013-09-30 to current/open; source msha-controller-operator-history