# Relationship history for MSHA mine 1516474

Current hierarchy: **Ray  Alred → R & R Coal Company 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:** Jimmy  Blanton → No 1; 1973-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky Harlan Coal Company Inc → No 1; 1988-08-01 to 1988-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy  Blanton → Kentucky Harlan Coal Company Inc; 1988-08-01 to 1988-10-13; source msha-controller-operator-history
- **operator_operates_mine:** Camp Branch Coal Company → No 1; 1988-10-14 to 1989-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Napier Burley & Doyle Vandagriff → No 1; 1988-10-14 to 1989-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Napier Burley & Doyle Vandagriff → Camp Branch Coal Company; 1988-10-14 to 1989-04-11; source msha-controller-operator-history
- **operator_operates_mine:** R & R Coal Company Inc → No 1; 1989-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ray  Alred → No 1; 1989-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray  Alred → R & R Coal Company Inc; 1989-04-12 to current/open; source msha-controller-operator-history