# Relationship history for MSHA mine 3503322

Current hierarchy: **CRH PLC → RiverBend Materials → Juniper Canyon Pit**

- 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:** CRH PLC → Juniper Canyon Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Juniper Rock Products → Juniper Canyon Pit; 1988-10-01 to 2024-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Taggart Robert J → Juniper Canyon Pit; 1988-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Taggart Robert J → Juniper Rock Products; 1988-10-01 to 2024-05-12; source msha-controller-operator-history
- **operator_operates_mine:** McFarlane Excavation,INC → Juniper Canyon Pit; 2024-05-13 to 2025-11-06; source msha-controller-operator-history
- **controller_controls_mine:** Tyrell M McFarlane et al → Juniper Canyon Pit; 2024-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tyrell M McFarlane et al → McFarlane Excavation,INC; 2024-05-13 to 2025-11-06; source msha-controller-operator-history
- **controller_controls_operator:** Lacie L McFarlane et al → McFarlane Excavation,INC; 2024-05-13 to 2025-11-06; source msha-controller-operator-history
- **operator_operates_mine:** RiverBend Materials → Juniper Canyon Pit; 2025-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → RiverBend Materials; 2025-11-07 to current/open; source msha-controller-operator-history