# Relationship history for MSHA mine 2102537

Current hierarchy: **James A  Anderson → ANDERSON BROTHERS CONSTRUCTION Co of Brainerd LLC → Co. Road 50 Pit**

- 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:** Anderson Brothers Construction Company → Co. Road 50 Pit; 1950-01-01 to 2019-09-16; source msha-controller-operator-history
- **controller_controls_mine:** James A  Anderson → Co. Road 50 Pit; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Anderson → Anderson Brothers Construction Company; 1997-05-01 to 2019-09-16; source msha-controller-operator-history
- **controller_controls_mine:** James A  Anderson → Co. Road 50 Pit; 2014-08-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** ANDERSON BROTHERS CONSTRUCTION Co of Brainerd LLC → Co. Road 50 Pit; 2019-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Anderson → ANDERSON BROTHERS CONSTRUCTION Co of Brainerd LLC; 2019-09-17 to current/open; source msha-controller-operator-history