# Relationship history for MSHA mine 1516444

Current hierarchy: **Hurst Thomas → T & H Construction → #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

- **operator_operates_mine:** Luellan Hollow Mining → #1; 1988-07-01 to 1992-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Crawford Dennis R & Danny R → #1; 1988-07-01 to 1992-04-20; source msha-controller-operator-history
- **controller_controls_operator:** Crawford Dennis R & Danny R → Luellan Hollow Mining; 1988-07-01 to 1992-04-20; source msha-controller-operator-history
- **operator_operates_mine:** H & H Construction → #1; 1992-04-21 to 1992-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Rose Michael Et Al → #1; 1992-04-21 to 1992-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Rose Michael Et Al → H & H Construction; 1992-04-21 to 1992-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Hurst Thomas Et Al → #1; 1992-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** T & H Construction → #1; 1992-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hurst Thomas Et Al → T & H Construction; 1992-09-11 to current/open; source msha-controller-operator-history