# Relationship history for MSHA mine 3401582

Current hierarchy: **Donnell Jon R Ii → Kay County Limestone Inc → NEWKIRK**

- 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:** C & K Quarry → NEWKIRK; 1986-12-01 to 1998-01-14; source msha-controller-operator-history
- **controller_controls_mine:** Barclay Charles → NEWKIRK; 1986-12-01 to 1998-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Barclay Charles → C & K Quarry; 1986-12-01 to 1998-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Kay County Limestone Inc → NEWKIRK; 1998-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donnell Jon R Ii → NEWKIRK; 1998-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donnell Jon R Ii → Kay County Limestone Inc; 1998-01-15 to current/open; source msha-controller-operator-history