# Relationship history for MSHA mine 1401271

Current hierarchy: **(Allen) L  Scott → Scott Rock Company LLC → SCOTT ROCK CO., LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Scott Rock Company → SCOTT ROCK CO., LLC; 1978-03-09 to 2006-04-20; source msha-controller-operator-history
- **controller_controls_mine:** (Allen) L  Scott et al → SCOTT ROCK CO., LLC; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** (Allen) L  Scott et al → Scott Rock Company; 1978-03-09 to 2006-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Scott Rock Company LLC → SCOTT ROCK CO., LLC; 2006-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** (Allen) L  Scott et al → SCOTT ROCK CO., LLC; 2006-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** (Allen) L  Scott et al → Scott Rock Company LLC; 2006-04-21 to current/open; source msha-controller-operator-history