# Relationship history for MSHA mine 0501382

Current hierarchy: **Caledonia Resources Inc → Henrietta Mines Inc → Henrietta 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:** San Juan Milling Company → Henrietta Mine; 1950-01-01 to 1980-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Petty John → Henrietta Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Petty John → San Juan Milling Company; 1950-01-01 to 1980-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Henrietta Mines Inc → Henrietta Mine; 1980-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Caledonia Resources Inc → Henrietta Mine; 1980-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Caledonia Resources Inc → Henrietta Mines Inc; 1980-08-15 to current/open; source msha-controller-operator-history