# Relationship history for MSHA mine 2401850

Current hierarchy: **Apollo Gold Corporation → Basin Creek Mining Inc → Basin Creek 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

- **operator_operates_mine:** Pangea Mining Inc → Basin Creek Mine; 1987-08-01 to 1989-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Martin Douglas → Basin Creek Mine; 1987-08-01 to 1989-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Martin Douglas → Pangea Mining Inc; 1987-08-01 to 1989-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Basin Creek Mining Inc → Basin Creek Mine; 1989-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Apollo Gold Corporation → Basin Creek Mine; 1989-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Apollo Gold Corporation → Basin Creek Mining Inc; 1989-07-01 to current/open; source msha-controller-operator-history