# Relationship history for MSHA mine 3401341

Current hierarchy: **Kirkes John → Clayton Cement Company → M And H Mine No 2**

- 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:** D & H Materials → M And H Mine No 2; 1981-09-01 to 1983-06-08; source msha-controller-operator-history
- **controller_controls_mine:** Huddleston Don → M And H Mine No 2; 1981-09-01 to 1983-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Huddleston Don → D & H Materials; 1981-09-01 to 1983-06-08; source msha-controller-operator-history
- **operator_operates_mine:** Clayton Cement Company → M And H Mine No 2; 1983-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kirkes John → M And H Mine No 2; 1983-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kirkes John → Clayton Cement Company; 1983-06-09 to current/open; source msha-controller-operator-history