# Relationship history for MSHA mine 1513055

Current hierarchy: **Christian Richard A → R A C Mining Corp → R A C No 8**

- 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:** Christian Richard A → R A C No 8; 1979-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nevels Coal Inc → R A C No 8; 1981-08-01 to 1983-02-08; source msha-controller-operator-history
- **controller_controls_mine:** Nevels Nathan → R A C No 8; 1981-08-01 to 1983-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Nevels Nathan → Nevels Coal Inc; 1981-08-01 to 1983-02-08; source msha-controller-operator-history
- **operator_operates_mine:** Paula Michelle Coal Company → R A C No 8; 1983-02-09 to 1983-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Claxton James → R A C No 8; 1983-02-09 to 1983-04-18; source msha-controller-operator-history
- **controller_controls_operator:** Claxton James → Paula Michelle Coal Company; 1983-02-09 to 1983-04-18; source msha-controller-operator-history
- **operator_operates_mine:** R A C Mining Corp → R A C No 8; 1983-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christian Richard A → R A C Mining Corp; 1983-04-19 to current/open; source msha-controller-operator-history