# Relationship history for MSHA mine 4105096

Current hierarchy: **Kevin  Armstrong; Richard  Counts → Western Slope Oil Services → Dutch Woman**

- 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:** Kevin  Armstrong et al → Dutch Woman; 2013-12-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Western Slope Oil Services → Dutch Woman; 2014-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Armstrong et al → Western Slope Oil Services; 2014-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Counts et al → Western Slope Oil Services; 2014-12-01 to current/open; source msha-controller-operator-history