# Relationship history for MSHA mine 2401607

Current hierarchy: **Clutis Wayne E → Wayne Clutis Mining Inc → Elk Creek 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Montana Contract Mining → Elk Creek Mine; 1981-03-01 to 1984-07-18; source msha-controller-operator-history
- **controller_controls_mine:** Good Mildred J → Elk Creek Mine; 1981-03-01 to 1984-07-18; source msha-controller-operator-history
- **controller_controls_operator:** Good Mildred J → Montana Contract Mining; 1981-03-01 to 1984-07-18; source msha-controller-operator-history
- **controller_controls_mine:** Clutis Wayne E → Elk Creek Mine; 1981-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nicor Minerals Inc → Elk Creek Mine; 1983-07-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Montana Barite Company → Elk Creek Mine; 1984-07-19 to 1988-05-11; source msha-controller-operator-history
- **controller_controls_operator:** Nicor Minerals Inc → Montana Barite Company; 1984-07-19 to 1988-05-11; source msha-controller-operator-history
- **operator_operates_mine:** Wayne Clutis Mining Inc → Elk Creek Mine; 1988-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clutis Wayne E → Wayne Clutis Mining Inc; 1988-05-12 to current/open; source msha-controller-operator-history