# Relationship history for MSHA mine 1202332

Current hierarchy: **CRH PLC → London Aggregates WS&G → London Aggregates Portable #1**

- 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:** London Aggregates WS&G → London Aggregates Portable #1; 2002-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnson S E Companies Inc → London Aggregates Portable #1; 2002-08-13 to 2003-06-15; source msha-controller-operator-history
- **controller_controls_operator:** Johnson S E Companies Inc → London Aggregates WS&G; 2002-08-13 to 2003-06-15; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → London Aggregates Portable #1; 2003-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → London Aggregates WS&G; 2003-06-16 to current/open; source msha-controller-operator-history