# Relationship history for MSHA mine 4605336

Current hierarchy: **Holland Robert W → New Haven Coal Inc → New Haven**

- 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:** Mountain State Mining Company Inc → New Haven; 1976-11-03 to 1980-07-24; source msha-controller-operator-history
- **controller_controls_mine:** Currence L Philip → New Haven; 1976-11-03 to 1980-07-24; source msha-controller-operator-history
- **controller_controls_operator:** Currence L Philip → Mountain State Mining Company Inc; 1976-11-03 to 1980-07-24; source msha-controller-operator-history
- **operator_operates_mine:** Pocahontas Coal Sales Inc → New Haven; 1980-07-25 to 1984-12-04; source msha-controller-operator-history
- **controller_controls_mine:** Robert R  Bowling → New Haven; 1980-07-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert R  Bowling → Pocahontas Coal Sales Inc; 1980-07-25 to 1984-12-04; source msha-controller-operator-history
- **operator_operates_mine:** White Oak Holding Company Inc → New Haven; 1984-12-05 to 1990-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Cline Jack → New Haven; 1984-12-05 to 1990-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Cline Jack → White Oak Holding Company Inc; 1984-12-05 to 1990-06-29; source msha-controller-operator-history
- **operator_operates_mine:** New Haven Coal Inc → New Haven; 1990-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Holland Robert W → New Haven; 1990-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holland Robert W → New Haven Coal Inc; 1990-06-30 to current/open; source msha-controller-operator-history