# Relationship history for MSHA mine 0202999

Current hierarchy: **Beverly  Knox; Everett  Knox → KSI Crushing Inc. → Plant 1**

- 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:** KSI Crushing Inc. → Plant 1; 2002-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Beverly  Knox et al → Plant 1; 2002-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beverly  Knox et al → KSI Crushing Inc.; 2002-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Everett  Knox et al → KSI Crushing Inc.; 2002-10-01 to current/open; source msha-controller-operator-history