# Relationship history for MSHA mine 4405682

Current hierarchy: **Millers Cove Resources Inc → Millers Cove Energy Company Inc → #1 Strip And Auger**

- 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:** Michigan Mining Company → #1 Strip And Auger; 1981-07-01 to 1982-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Frink Gary → #1 Strip And Auger; 1981-07-01 to 1982-03-30; source msha-controller-operator-history
- **controller_controls_operator:** Frink Gary → Michigan Mining Company; 1981-07-01 to 1982-03-30; source msha-controller-operator-history
- **operator_operates_mine:** Millers Cove Energy Company Inc → #1 Strip And Auger; 1982-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Millers Cove Resources Inc → #1 Strip And Auger; 1982-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Millers Cove Resources Inc → Millers Cove Energy Company Inc; 1982-03-31 to current/open; source msha-controller-operator-history