# Relationship history for MSHA mine 4606714

Current hierarchy: **Swartz James C Jr → D & A Resources Inc → Mine No 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:** Royce Dallas W → Mine No 2; 1983-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R & F Coal Inc → Mine No 2; 1983-09-01 to 1985-11-17; source msha-controller-operator-history
- **controller_controls_operator:** Royce Dallas W → R & F Coal Inc; 1983-09-01 to 1985-11-17; source msha-controller-operator-history
- **controller_controls_mine:** Bolen Aaron Doug → Mine No 2; 1985-08-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** North Fork Enterprises Inc → Mine No 2; 1985-11-18 to 1986-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Bolen Aaron Doug → North Fork Enterprises Inc; 1985-11-18 to 1986-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Rhinestone Coal Company → Mine No 2; 1986-09-09 to 1987-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Kessler Johnie → Mine No 2; 1986-09-09 to 1987-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Kessler Johnie → Rhinestone Coal Company; 1986-09-09 to 1987-05-12; source msha-controller-operator-history
- **operator_operates_mine:** Oak Wood Coal Company Inc → Mine No 2; 1987-05-13 to 1988-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Redden Steve W → Mine No 2; 1987-05-13 to 1988-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Redden Steve W → Oak Wood Coal Company Inc; 1987-05-13 to 1988-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Swartz James C Jr → Mine No 2; 1987-10-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D & A Resources Inc → Mine No 2; 1988-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Swartz James C Jr → D & A Resources Inc; 1988-09-26 to current/open; source msha-controller-operator-history