# Relationship history for MSHA mine 2601445

Current hierarchy: **Trafalgar Mines Ltd-Goldfield Ltd → Trafalgar Mines-Partnership → Goldfield Heap Leach 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:** H M C Inc → Goldfield Heap Leach Project; 1950-01-01 to 1979-03-31; source msha-controller-operator-history
- **controller_controls_mine:** H M C Inc → Goldfield Heap Leach Project; 1950-01-01 to 1979-03-31; source msha-controller-operator-history
- **controller_controls_operator:** H M C Inc → H M C Inc; 1950-01-01 to 1979-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Diablo Mine Services Company → Goldfield Heap Leach Project; 1979-04-01 to 1980-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Dillingham Construction Corp → Goldfield Heap Leach Project; 1979-04-01 to 1980-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Dillingham Construction Corp → Diablo Mine Services Company; 1979-04-01 to 1980-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Trafalgar Mines-Partnership → Goldfield Heap Leach Project; 1980-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Trafalgar Mines Ltd-Goldfield Ltd → Goldfield Heap Leach Project; 1980-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Trafalgar Mines Ltd-Goldfield Ltd → Trafalgar Mines-Partnership; 1980-08-01 to current/open; source msha-controller-operator-history