# Relationship history for MSHA mine 0301748

Current hierarchy: **Shirley Joe → Bateman Engineering → MURFREESBORO SAMPLE PLT**

- 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:** Diamond Operations Inc → MURFREESBORO SAMPLE PLT; 1994-02-01 to 1996-09-09; source msha-controller-operator-history
- **controller_controls_mine:** Diamond Operations Inc → MURFREESBORO SAMPLE PLT; 1994-02-01 to 1996-09-09; source msha-controller-operator-history
- **controller_controls_operator:** Diamond Operations Inc → Diamond Operations Inc; 1994-02-01 to 1996-09-09; source msha-controller-operator-history
- **operator_operates_mine:** Bateman Engineering → MURFREESBORO SAMPLE PLT; 1996-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shirley Joe → MURFREESBORO SAMPLE PLT; 1996-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shirley Joe → Bateman Engineering; 1996-09-10 to current/open; source msha-controller-operator-history