# Relationship history for MSHA mine 1600336

Current hierarchy: **Arcosa, Inc → Southern Aggregates LLC Delaware → Plant 6**

- 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:** Louisiana Industries → Plant 6; 1950-01-01 to 1985-10-02; source msha-controller-operator-history
- **controller_controls_mine:** Texas Industries Inc → Plant 6; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Texas Industries Inc → Louisiana Industries; 1950-01-01 to 1985-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Texas Industries → Plant 6; 1985-10-03 to 2004-12-14; source msha-controller-operator-history
- **controller_controls_operator:** Texas Industries Inc → Texas Industries; 1985-10-03 to 2004-12-14; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Plant 6; 2001-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Texas Industries Inc → Plant 6; 2004-12-01 to 2014-07-01; source msha-controller-operator-history
- **operator_operates_mine:** TXI Operations LP → Plant 6; 2004-12-15 to 2008-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Texas Industries Inc → TXI Operations LP; 2004-12-15 to 2008-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge Aggregates Southeast Inc → Plant 6; 2008-06-01 to 2010-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge Aggregates Southeast Inc; 2008-06-01 to 2010-06-20; source msha-controller-operator-history
- **controller_controls_mine:** VantaCore Partners LP et al → Plant 6; 2008-09-04 to 2018-12-10; source msha-controller-operator-history
- **operator_operates_mine:** Southern Aggregates LLC Delaware → Plant 6; 2010-06-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** VantaCore Partners LP et al → Southern Aggregates LLC Delaware; 2010-06-21 to 2018-12-10; source msha-controller-operator-history
- **controller_controls_mine:** Martin Marietta Materials Inc → Plant 6; 2014-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → TXI Operations LP; 2014-07-02 to 2008-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Sun Capital Partners Inc → Plant 6; 2018-12-11 to 2021-04-05; source msha-controller-operator-history
- **controller_controls_operator:** Sun Capital Partners Inc → Southern Aggregates LLC Delaware; 2018-12-11 to 2021-04-05; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Plant 6; 2021-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → Southern Aggregates LLC Delaware; 2021-04-06 to current/open; source msha-controller-operator-history