# Relationship history for MSHA mine 0600810

Current hierarchy: **CRH PLC → TILCON Connecticut Inc → POWERSCREEN WARRIOR 43.566616**

- 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 → POWERSCREEN WARRIOR 43.566616; 1996-09-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** TILCON Connecticut Inc → POWERSCREEN WARRIOR 43.566616; 2018-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → TILCON Connecticut Inc; 2018-11-13 to current/open; source msha-controller-operator-history