# Relationship history for MSHA mine 1516510

Current hierarchy: **Hammons Dennise → Yellow Creek Corp → 2**

- 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:** Crawford Dennis R & Danny R → 2; 1988-06-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Steel Hollow Mining Inc → 2; 1988-11-01 to 1992-01-29; source msha-controller-operator-history
- **controller_controls_operator:** Crawford Dennis R & Danny R → Steel Hollow Mining Inc; 1988-11-01 to 1992-01-29; source msha-controller-operator-history
- **operator_operates_mine:** G & C Coal Company → 2; 1992-01-30 to 1992-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Lanham Roy Et Al → 2; 1992-01-30 to 1992-09-21; source msha-controller-operator-history
- **controller_controls_operator:** Lanham Roy Et Al → G & C Coal Company; 1992-01-30 to 1992-09-21; source msha-controller-operator-history
- **operator_operates_mine:** Megan Inc → 2; 1992-09-22 to 1995-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Rose Michael Et Al → 2; 1992-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rose Michael Et Al → Megan Inc; 1992-09-22 to 1995-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Hammons Dennise → 2; 1994-08-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Yellow Creek Corp → 2; 1995-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hammons Dennise → Yellow Creek Corp; 1995-09-13 to current/open; source msha-controller-operator-history