# Relationship history for MSHA mine 1507052

Current hierarchy: **Collins Hoover & Buddy Sexton → B & H Coal Company → No 13 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

- **controller_controls_mine:** Collins Hoover & Buddy Sexton → No 13 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Taylor John & Lisa → No 13 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Moe Coal Company Inc → No 13 Mine; 1974-01-01 to 1977-03-23; source msha-controller-operator-history
- **controller_controls_operator:** Taylor John & Lisa → Moe Coal Company Inc; 1974-01-01 to 1977-03-23; source msha-controller-operator-history
- **operator_operates_mine:** Hondo Coal Company → No 13 Mine; 1977-03-24 to 1978-09-24; source msha-controller-operator-history
- **controller_controls_mine:** Honeycutt Harold & J P → No 13 Mine; 1977-03-24 to 1978-09-24; source msha-controller-operator-history
- **controller_controls_operator:** Honeycutt Harold & J P → Hondo Coal Company; 1977-03-24 to 1978-09-24; source msha-controller-operator-history
- **operator_operates_mine:** B & H Coal Company → No 13 Mine; 1978-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Collins Hoover & Buddy Sexton → B & H Coal Company; 1978-09-25 to current/open; source msha-controller-operator-history