# Relationship history for MSHA mine 1000402

Current hierarchy: **Integra Resources Corp. → Delamar Mining Company → Delamar 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:** Mapco Minerals Corp → Delamar Mine; 1950-01-01 to 1984-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Mapco Minerals Corp-Superior Oil Co & Canadian Sup → Delamar Mine; 1950-01-01 to 1984-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Mapco Minerals Corp-Superior Oil Co & Canadian Sup → Mapco Minerals Corp; 1950-01-01 to 1984-09-11; source msha-controller-operator-history
- **operator_operates_mine:** Nerco De Lamar Company → Delamar Mine; 1984-09-12 to 1993-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Pacificorp (Now: Mid-American Energy Hldgs-C02046) → Delamar Mine; 1984-09-12 to 1993-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Pacificorp (Now: Mid-American Energy Hldgs-C02046) → Nerco De Lamar Company; 1984-09-12 to 1993-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Delamar Mining Company → Delamar Mine; 1993-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kinross Gold Corporation → Delamar Mine; 1993-08-03 to 2026-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Kinross Gold Corporation → Delamar Mining Company; 1993-08-03 to 2026-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Integra Resources Corp. → Delamar Mine; 2026-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Integra Resources Corp. → Delamar Mining Company; 2026-04-01 to current/open; source msha-controller-operator-history