# Relationship history for MSHA mine 1516136

Current hierarchy: **Pamela J  Allen → P B & C Energy Inc → 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

- **controller_controls_mine:** George  Newsom → No 1; 1983-07-08 to 1989-12-13; source msha-controller-operator-history
- **operator_operates_mine:** Kimberly & K Coal Company Inc → No 1; 1987-08-01 to 1988-08-28; source msha-controller-operator-history
- **controller_controls_operator:** George  Newsom → Kimberly & K Coal Company Inc; 1987-08-01 to 1988-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Kimberly & K Coal Company Inc → No 1; 1988-08-29 to 1989-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Allen Kenneth & Sandra Newsom → No 1; 1988-08-29 to 1989-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Allen Kenneth & Sandra Newsom → Kimberly & K Coal Company Inc; 1988-08-29 to 1989-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Ratliff Judy Et Al → No 1; 1989-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** High Sulfur Coal Company → No 1; 1989-09-11 to 1990-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Ratliff Judy Et Al → High Sulfur Coal Company; 1989-09-11 to 1990-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Taylor James → No 1; 1990-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Thundercat Energy Corp → No 1; 1990-07-20 to 1991-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Taylor James → Thundercat Energy Corp; 1990-07-20 to 1991-02-11; source msha-controller-operator-history
- **operator_operates_mine:** P B & C Energy Inc → No 1; 1991-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pamela J  Allen → No 1; 1991-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pamela J  Allen → P B & C Energy Inc; 1991-02-12 to current/open; source msha-controller-operator-history