# Relationship history for MSHA mine 2401609

Current hierarchy: **Clayton Bill → Global Oil & Gold Company → Miller Mt Mine & 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:** Guardian Gold Inc → Miller Mt Mine & Mill; 1981-04-01 to 1986-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Guardian Gold Inc → Miller Mt Mine & Mill; 1981-04-01 to 1986-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Guardian Gold Inc → Guardian Gold Inc; 1981-04-01 to 1986-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Atlantic Mining & Leaco Mines Inc → Miller Mt Mine & Mill; 1986-09-01 to 1987-04-12; source msha-controller-operator-history
- **operator_operates_mine:** Atlantic/Leaco Mining Joint Venture → Miller Mt Mine & Mill; 1986-09-29 to 1987-04-12; source msha-controller-operator-history
- **controller_controls_operator:** Atlantic Mining & Leaco Mines Inc → Atlantic/Leaco Mining Joint Venture; 1986-09-29 to 1987-04-12; source msha-controller-operator-history
- **operator_operates_mine:** Global Oil & Gold Company → Miller Mt Mine & Mill; 1987-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clayton Bill → Miller Mt Mine & Mill; 1987-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clayton Bill → Global Oil & Gold Company; 1987-04-13 to current/open; source msha-controller-operator-history