# Relationship history for MSHA mine 3606986

Current hierarchy: **Hawley Lavern R → Kin Coal Company Inc → Hutchesons Strip**

- 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:** Kin Coal Company Inc → Hutchesons Strip; 1980-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hawley Lavern R → Hutchesons Strip; 1980-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hawley Lavern R → Kin Coal Company Inc; 1980-05-01 to current/open; source msha-controller-operator-history