# Relationship history for MSHA mine 2401765

Current hierarchy: **CRH PLC → L S Jensen Construction & Paving → LS Jensen-Portable Crusher**

- 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:** L S Jensen & Sons Inc → LS Jensen-Portable Crusher; 1984-06-01 to 2000-04-07; source msha-controller-operator-history
- **controller_controls_mine:** George L  Jensen → LS Jensen-Portable Crusher; 1984-06-01 to 2000-04-07; source msha-controller-operator-history
- **controller_controls_operator:** George L  Jensen → L S Jensen & Sons Inc; 1984-06-01 to 2000-04-07; source msha-controller-operator-history
- **operator_operates_mine:** L S Jensen Construction & Paving → LS Jensen-Portable Crusher; 2000-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → LS Jensen-Portable Crusher; 2000-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → L S Jensen Construction & Paving; 2000-04-08 to current/open; source msha-controller-operator-history