# Relationship history for MSHA mine 4405351

Current hierarchy: **Mack  Stiltner → Lucky J Coal Company → 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:** Stiltner Carl & Reford Williamson → Mine No 1; 1979-07-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hard Times Coal Company → Mine No 1; 1979-12-01 to 1982-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Stiltner Carl & Reford Williamson → Hard Times Coal Company; 1979-12-01 to 1982-08-16; source msha-controller-operator-history
- **operator_operates_mine:** Tri-Della Mining Corp → Mine No 1; 1982-08-17 to 1983-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Mounts John → Mine No 1; 1982-08-17 to 1983-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Mounts John → Tri-Della Mining Corp; 1982-08-17 to 1983-07-27; source msha-controller-operator-history
- **operator_operates_mine:** Lucky J Coal Company → Mine No 1; 1983-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mack  Stiltner et al → Mine No 1; 1983-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mack  Stiltner et al → Lucky J Coal Company; 1983-07-28 to current/open; source msha-controller-operator-history