# Relationship history for MSHA mine 4801315

Current hierarchy: **Catchpole Glenn J → Altair Resources Inc → Bison Basin Decommissioning Project**

- 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:** Opi-Western Joint Venture → Bison Basin Decommissioning Project; 1980-03-01 to 1986-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Ogle Petroleum Inc & Western Fuel Inc → Bison Basin Decommissioning Project; 1980-03-01 to 1986-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Ogle Petroleum Inc & Western Fuel Inc → Opi-Western Joint Venture; 1980-03-01 to 1986-09-15; source msha-controller-operator-history
- **operator_operates_mine:** Altair Resources Inc → Bison Basin Decommissioning Project; 1986-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Catchpole Glenn J → Bison Basin Decommissioning Project; 1986-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Catchpole Glenn J → Altair Resources Inc; 1986-09-16 to current/open; source msha-controller-operator-history