# Relationship history for MSHA mine 2402185

Current hierarchy: **CRH PLC → Montana Mtls & Cons → LS Jensen Screen Plant**

- 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:** George L  Jensen → LS Jensen Screen Plant; 1984-06-01 to 2000-04-07; source msha-controller-operator-history
- **operator_operates_mine:** L S Jensen & Sons Inc → LS Jensen Screen Plant; 1999-10-01 to 2000-04-07; source msha-controller-operator-history
- **controller_controls_operator:** George L  Jensen → L S Jensen & Sons Inc; 1999-10-01 to 2000-04-07; source msha-controller-operator-history
- **operator_operates_mine:** LS Jensen Construction & Ready Mix → LS Jensen Screen Plant; 2000-04-08 to 2018-04-26; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → LS Jensen Screen Plant; 2000-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → LS Jensen Construction & Ready Mix; 2000-04-08 to 2018-04-26; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → LS Jensen Screen Plant; 2002-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Montana Mtls & Cons → LS Jensen Screen Plant; 2018-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Montana Mtls & Cons; 2018-04-27 to current/open; source msha-controller-operator-history