# Relationship history for MSHA mine 0400555

Current hierarchy: **Arcosa, Inc → ARCOSA LWFP, LLC → Arcosa Frazier Park Plant# 1603**

- 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:** Lightweight Processing Company → Arcosa Frazier Park Plant# 1603; 1950-01-01 to 1983-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Vernon  Benfer → Arcosa Frazier Park Plant# 1603; 1950-01-01 to 1983-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Vernon  Benfer → Lightweight Processing Company; 1950-01-01 to 1983-10-05; source msha-controller-operator-history
- **operator_operates_mine:** Lightweight Processing Company → Arcosa Frazier Park Plant# 1603; 1983-10-06 to 1988-12-08; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Baird → Arcosa Frazier Park Plant# 1603; 1983-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Baird → Lightweight Processing Company; 1983-10-06 to 1988-12-08; source msha-controller-operator-history
- **operator_operates_mine:** Pacific Lightweight Products Company → Arcosa Frazier Park Plant# 1603; 1988-12-09 to 1996-01-22; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Arcosa Frazier Park Plant# 1603; 1988-12-09 to 1996-01-22; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Pacific Lightweight Products Company; 1988-12-09 to 1996-01-22; source msha-controller-operator-history
- **operator_operates_mine:** Pacific Custom Materials Inc → Arcosa Frazier Park Plant# 1603; 1996-01-23 to 2013-03-27; source msha-controller-operator-history
- **controller_controls_mine:** Texas Industries Inc → Arcosa Frazier Park Plant# 1603; 1996-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Texas Industries Inc → Pacific Custom Materials Inc; 1996-01-23 to 2013-03-27; source msha-controller-operator-history
- **operator_operates_mine:** ARCOSA LWFP, LLC → Arcosa Frazier Park Plant# 1603; 2013-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Trinity Industries Inc → Arcosa Frazier Park Plant# 1603; 2013-03-28 to 2018-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Trinity Industries Inc → ARCOSA LWFP, LLC; 2013-03-28 to 2018-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Arcosa Frazier Park Plant# 1603; 2018-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → ARCOSA LWFP, LLC; 2018-11-01 to current/open; source msha-controller-operator-history