# Relationship history for MSHA mine 4105861

Current hierarchy: **JW  Thomas; Travis  Thomas → WES AGG,LLC → BISON 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** JW  Thomas et al → BISON PIT; 2023-05-01 to 2026-03-30; source msha-controller-operator-history
- **operator_operates_mine:** WES AGG,LLC → BISON PIT; 2026-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JW  Thomas et al → WES AGG,LLC; 2026-03-31 to 2026-03-30; source msha-controller-operator-history
- **controller_controls_operator:** Travis  Thomas et al → WES AGG,LLC; 2026-03-31 to 2026-03-30; source msha-controller-operator-history
- **controller_controls_operator:** John  Thomas et al → WES AGG,LLC; 2026-03-31 to 2026-03-30; source msha-controller-operator-history
- **controller_controls_mine:** JW  Thomas et al → BISON PIT; 2026-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JW  Thomas et al → WES AGG,LLC; 2026-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Travis  Thomas et al → WES AGG,LLC; 2026-03-31 to current/open; source msha-controller-operator-history