# Relationship history for MSHA mine 0504012

Current hierarchy: **Mayne P James → San Miguel Gold Mines Inc → Dorie 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:** Geneva Minerals Inc → Dorie Mine; 1985-03-01 to 1989-08-17; source msha-controller-operator-history
- **controller_controls_mine:** T D  Barnes → Dorie Mine; 1985-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** T D  Barnes → Geneva Minerals Inc; 1985-03-01 to 1989-08-17; source msha-controller-operator-history
- **operator_operates_mine:** San Miguel Gold Mines Inc → Dorie Mine; 1989-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mayne P James → Dorie Mine; 1989-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mayne P James → San Miguel Gold Mines Inc; 1989-08-18 to current/open; source msha-controller-operator-history