# Relationship history for MSHA mine 4105846

Current hierarchy: **Maria Yanet  Perez; Eric Manuel  Perez → ROCK'N STONE LLC → ROCK'N STONE QUARRY**

- 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:** ROCK'N STONE LLC → ROCK'N STONE QUARRY; 2026-03-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eric Manuel  Perez et al → ROCK'N STONE QUARRY; 2026-03-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric Manuel  Perez et al → ROCK'N STONE LLC; 2026-03-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maria Yanet  Perez et al → ROCK'N STONE LLC; 2026-03-11 to current/open; source msha-controller-operator-history