# Relationship history for MSHA mine 4406139

Current hierarchy: **Kendrick Claude H Sr → K & K Coal Inc → Mine No 1**

- 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:** Jack  Slone et al → Mine No 1; 1984-01-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bocephus Coal Company Inc → Mine No 1; 1984-09-01 to 1986-03-23; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Slone et al → Bocephus Coal Company Inc; 1984-09-01 to 1986-03-23; source msha-controller-operator-history
- **operator_operates_mine:** K & K Coal Inc → Mine No 1; 1986-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kendrick Claude H Sr → Mine No 1; 1986-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kendrick Claude H Sr → K & K Coal Inc; 1986-03-24 to current/open; source msha-controller-operator-history