# Relationship history for MSHA mine 2602440

Current hierarchy: **Mastec Inc → Precision Aggregate Products LLC → Topaz Mine**

- 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:** Precision Aggregate Products LLC → Topaz Mine; 2000-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott L  Bulloch et al → Topaz Mine; 2000-11-01 to 2022-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Scott L  Bulloch et al → Precision Aggregate Products LLC; 2000-11-01 to 2022-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Travis O  Eaton et al → Precision Aggregate Products LLC; 2000-11-01 to 2022-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Mastec Inc → Topaz Mine; 2022-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mastec Inc → Precision Aggregate Products LLC; 2022-08-19 to current/open; source msha-controller-operator-history