# Relationship history for MSHA mine 1512098

Current hierarchy: **Adams Herbert & Ray Jr → Adams Brothers Coal Company → 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

- **operator_operates_mine:** Crescent Energy Inc → No 1; 1979-10-01 to 1980-08-05; source msha-controller-operator-history
- **controller_controls_mine:** Buchannon Peter → No 1; 1979-10-01 to 1980-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Buchannon Peter → Crescent Energy Inc; 1979-10-01 to 1980-08-05; source msha-controller-operator-history
- **operator_operates_mine:** Blair & Lewis Collieries Inc → No 1; 1980-08-06 to 1982-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Lewis Lonnie B & Estill Blair → No 1; 1980-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Lonnie B & Estill Blair → Blair & Lewis Collieries Inc; 1980-08-06 to 1982-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Adams Brothers Coal Company → No 1; 1982-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adams Herbert & Ray Jr Et Al → No 1; 1982-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adams Herbert & Ray Jr Et Al → Adams Brothers Coal Company; 1982-07-30 to current/open; source msha-controller-operator-history