# Relationship history for MSHA mine 0500340

Current hierarchy: **Vince K  Eisenhand → Cmt Excavating Inc → CHURCH HARVEY 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Great West Excavating Company → CHURCH HARVEY MINE; 1950-01-01 to 1998-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Don G  Clark → CHURCH HARVEY MINE; 1950-01-01 to 1998-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Don G  Clark → Great West Excavating Company; 1950-01-01 to 1998-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Cmt Excavating Inc → CHURCH HARVEY MINE; 1998-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vince K  Eisenhand → CHURCH HARVEY MINE; 1998-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vince K  Eisenhand → Cmt Excavating Inc; 1998-02-01 to current/open; source msha-controller-operator-history