# Relationship history for MSHA mine 4405234

Current hierarchy: **Deel Carmel & Odell → Four D Coal Company Inc → No 4**

- 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:** Carol Coal Co Inc Of Tazewell County Va → No 4; 1979-05-01 to 1981-08-17; source msha-controller-operator-history
- **controller_controls_mine:** Childers Walt C → No 4; 1979-05-01 to 1981-08-17; source msha-controller-operator-history
- **controller_controls_operator:** Childers Walt C → Carol Coal Co Inc Of Tazewell County Va; 1979-05-01 to 1981-08-17; source msha-controller-operator-history
- **operator_operates_mine:** Deana Enterprises Inc → No 4; 1981-08-18 to 1982-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Blankenship Frank → No 4; 1981-08-18 to 1982-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Frank → Deana Enterprises Inc; 1981-08-18 to 1982-03-14; source msha-controller-operator-history
- **operator_operates_mine:** B & D Coal Company → No 4; 1982-03-15 to 1982-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Blankenship Roger-Richard Deskind Et Al → No 4; 1982-03-15 to 1982-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Roger-Richard Deskind Et Al → B & D Coal Company; 1982-03-15 to 1982-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Deel Carmel & Odell Et Al → No 4; 1982-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Four D Coal Company Inc → No 4; 1982-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Deel Carmel & Odell Et Al → Four D Coal Company Inc; 1982-10-14 to current/open; source msha-controller-operator-history