# Relationship history for MSHA mine 1516282

Current hierarchy: **Darrell  Davis → D & H Coal Company Inc → No 2 Surface**

- 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:** Darrell  Davis → No 2 Surface; 1980-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rohe Development Inc → No 2 Surface; 1988-01-01 to 1988-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Hardebeck John → No 2 Surface; 1988-01-01 to 1988-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Hardebeck John → Rohe Development Inc; 1988-01-01 to 1988-03-29; source msha-controller-operator-history
- **operator_operates_mine:** D & H Coal Company Inc → No 2 Surface; 1988-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darrell  Davis → D & H Coal Company Inc; 1988-03-30 to current/open; source msha-controller-operator-history