# Relationship history for MSHA mine 1401429

Current hierarchy: **Kevin L  Starbuck → Starbuck Rock Company → Starbuck Rock Company**

- 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

- **operator_operates_mine:** Starbuck Industries → Starbuck Rock Company; 1983-03-01 to 1983-08-17; source msha-controller-operator-history
- **controller_controls_mine:** Kevin L  Starbuck → Starbuck Rock Company; 1983-03-01 to 1983-08-17; source msha-controller-operator-history
- **controller_controls_operator:** Kevin L  Starbuck → Starbuck Industries; 1983-03-01 to 1983-08-17; source msha-controller-operator-history
- **operator_operates_mine:** Kansas Quarries Inc → Starbuck Rock Company; 1983-08-18 to 1985-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Cheever James L → Starbuck Rock Company; 1983-08-18 to 1985-03-24; source msha-controller-operator-history
- **controller_controls_operator:** Cheever James L → Kansas Quarries Inc; 1983-08-18 to 1985-03-24; source msha-controller-operator-history
- **operator_operates_mine:** Starbuck Rock Company → Starbuck Rock Company; 1985-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin L  Starbuck → Starbuck Rock Company; 1985-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin L  Starbuck → Starbuck Rock Company; 1985-03-25 to current/open; source msha-controller-operator-history