# Relationship history for MSHA mine 2002397

Current hierarchy: **James O  Reid → Evans Mining Corp → EVANS MINING**

- 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:** R H Strauchman Industries Inc → EVANS MINING; 1978-03-09 to 1984-12-20; source msha-controller-operator-history
- **controller_controls_mine:** Richard H  Strauchman → EVANS MINING; 1978-03-09 to 1984-12-20; source msha-controller-operator-history
- **controller_controls_operator:** Richard H  Strauchman → R H Strauchman Industries Inc; 1978-03-09 to 1984-12-20; source msha-controller-operator-history
- **operator_operates_mine:** Evans Mining Corp → EVANS MINING; 1984-12-21 to 1996-06-10; source msha-controller-operator-history
- **controller_controls_mine:** Evans Industries Inc → EVANS MINING; 1984-12-21 to 1996-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Evans Industries Inc → Evans Mining Corp; 1984-12-21 to 1996-06-10; source msha-controller-operator-history
- **operator_operates_mine:** Evans Mining Corp → EVANS MINING; 1996-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James O  Reid → EVANS MINING; 1996-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James O  Reid → Evans Mining Corp; 1996-06-11 to current/open; source msha-controller-operator-history