# Relationship history for MSHA mine 4105125

Current hierarchy: **Summit Materials LLC → Alleyton Resource Company, LLC. → SPRING 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:** Todd  Barten Et Al → SPRING PLANT; 2010-03-19 to 2014-01-22; source msha-controller-operator-history
- **controller_controls_mine:** Dan  McCarty et al → SPRING PLANT; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Summit Materials LLC → SPRING PLANT; 2014-01-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Multisources Sand and Gravel, LTD → SPRING PLANT; 2015-11-23 to 2020-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Dan  McCarty et al → Multisources Sand and Gravel, LTD; 2015-11-23 to 2020-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Lee  McCarty et al → Multisources Sand and Gravel, LTD; 2015-11-23 to 2020-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Alleyton Resource Company, LLC. → SPRING PLANT; 2020-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Todd  Barten Et Al → Alleyton Resource Company, LLC.; 2020-07-10 to 2014-01-22; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Alleyton Resource Company, LLC.; 2020-07-10 to current/open; source msha-controller-operator-history