# Relationship history for MSHA mine 4702914

Current hierarchy: **M10 Inc → MICHELS ROAD & STONE, INC → Plant #12**

- 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

- **controller_controls_mine:** Michels Corporation → Plant #12; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Edward E Gillen Company → Plant #12; 1990-11-01 to 1996-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Gary A  Jackson → Plant #12; 1990-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary A  Jackson → Edward E Gillen Company; 1990-11-01 to 1996-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Michels Corporation → Plant #12; 1996-06-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Michels Pipeline Construction Inc → Plant #12; 1996-10-14 to 2005-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Michels Corporation → Michels Pipeline Construction Inc; 1996-10-14 to 2005-12-01; source msha-controller-operator-history
- **operator_operates_mine:** Michels Corporation → Plant #12; 2005-12-02 to 2021-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Michels Corporation → Michels Corporation; 2005-12-02 to 2021-10-31; source msha-controller-operator-history
- **operator_operates_mine:** MICHELS ROAD & STONE, INC → Plant #12; 2021-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** M10 Inc → Plant #12; 2021-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M10 Inc → MICHELS ROAD & STONE, INC; 2021-11-01 to current/open; source msha-controller-operator-history