# Relationship history for MSHA mine 1600033

Current hierarchy: **Arcosa, Inc → Arcosa LW, BR, LLC. → Arcosa Erwinville Plant #1671**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Big River Industries Inc → Arcosa Erwinville Plant #1671; 1950-01-01 to 1987-10-14; source msha-controller-operator-history
- **controller_controls_mine:** W H  Lane  et al → Arcosa Erwinville Plant #1671; 1950-01-01 to 1987-10-14; source msha-controller-operator-history
- **controller_controls_operator:** W H  Lane  et al → Big River Industries Inc; 1950-01-01 to 1987-10-14; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Arcosa Erwinville Plant #1671; 1987-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big River Industries → Arcosa Erwinville Plant #1671; 1987-10-15 to 2015-03-19; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Big River Industries; 1987-10-15 to 2015-03-19; source msha-controller-operator-history
- **operator_operates_mine:** Arcosa LW, BR, LLC. → Arcosa Erwinville Plant #1671; 2015-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Trinity Industries Inc → Arcosa Erwinville Plant #1671; 2015-03-20 to 2018-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Trinity Industries Inc → Arcosa LW, BR, LLC.; 2015-03-20 to 2018-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Arcosa Erwinville Plant #1671; 2018-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → Arcosa LW, BR, LLC.; 2018-11-01 to current/open; source msha-controller-operator-history