# Relationship history for MSHA mine 0500539

Current hierarchy: **Patrick D  Maher → Moritz Mining Company Inc → Golden Gilpin Mill**

- 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:** Moritz Mining Company Inc → Golden Gilpin Mill; 1980-01-01 to 1984-01-19; source msha-controller-operator-history
- **controller_controls_mine:** James Laurence → Golden Gilpin Mill; 1980-01-01 to 1984-01-19; source msha-controller-operator-history
- **controller_controls_operator:** James Laurence → Moritz Mining Company Inc; 1980-01-01 to 1984-01-19; source msha-controller-operator-history
- **operator_operates_mine:** Moritz Mining Company Inc → Golden Gilpin Mill; 1984-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patrick D  Maher → Golden Gilpin Mill; 1984-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick D  Maher → Moritz Mining Company Inc; 1984-01-20 to current/open; source msha-controller-operator-history