# Relationship history for MSHA mine 1510804

Current hierarchy: **Swanton Corp → Kenerco Corp → Buckley Strip No 71**

- 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

- **operator_operates_mine:** Buckley Mining Corp → Buckley Strip No 71; 1977-10-01 to 1979-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Justice Paul S → Buckley Strip No 71; 1977-10-01 to 1979-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Justice Paul S → Buckley Mining Corp; 1977-10-01 to 1979-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Buckley Mining Corp → Buckley Strip No 71; 1979-05-01 to 1983-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Adams Resources & Energy Inc → Buckley Strip No 71; 1979-05-01 to 1983-02-24; source msha-controller-operator-history
- **controller_controls_operator:** Adams Resources & Energy Inc → Buckley Mining Corp; 1979-05-01 to 1983-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Swanton Corp → Buckley Strip No 71; 1979-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kenerco Corp → Buckley Strip No 71; 1983-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Swanton Corp → Kenerco Corp; 1983-02-25 to current/open; source msha-controller-operator-history