# Relationship history for MSHA mine 4105119

Current hierarchy: **Rebecca A Reyes; Gregg T  Reyes → Benchmark Materials LLC → Benchmark Materials 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Benchmark Materials LLC → Benchmark Materials LLC; 2015-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rebecca A Reyes et al → Benchmark Materials LLC; 2015-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rebecca A Reyes et al → Benchmark Materials LLC; 2015-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gregg T  Reyes et al → Benchmark Materials LLC; 2015-04-10 to current/open; source msha-controller-operator-history