# Relationship history for MSHA mine 4105234

Current hierarchy: **Arcosa, Inc → Arcosa Aggregates, Inc → Cameron 1336 (3)**

- 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:** Trinity Industries Inc → Cameron 1336 (3); 1991-12-01 to 2018-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Michael W  Fulton → Cameron 1336 (3); 2004-06-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little River Materials, Inc. → Cameron 1336 (3); 2017-01-31 to 2020-08-07; source msha-controller-operator-history
- **controller_controls_operator:** Michael W  Fulton → Little River Materials, Inc.; 2017-01-31 to 2020-08-07; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Cameron 1336 (3); 2018-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Arcosa Aggregates, Inc → Cameron 1336 (3); 2020-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → Arcosa Aggregates, Inc; 2020-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Trinity Industries Inc → Arcosa Aggregates, Inc; 2020-08-08 to 2018-10-31; source msha-controller-operator-history