# Relationship history for MSHA mine 0101795

Current hierarchy: **Headrick Jerry-Ronald & William Haley → Triple H Coal Company → Lynn 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

- **controller_controls_mine:** Headrick Jerry-Ronald & William Haley → Lynn Strip; 1977-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Triple H Coal Company → Lynn Strip; 1977-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Headrick Jerry-Ronald & William Haley → Triple H Coal Company; 1977-09-01 to current/open; source msha-controller-operator-history