# Relationship history for MSHA mine 2401532

Current hierarchy: **Brown Carl-Fred Weiling → Dillon Mining & Milling → Kent Mine**

- 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:** Badger Mining Company → Kent Mine; 1980-04-01 to 1983-07-13; source msha-controller-operator-history
- **controller_controls_mine:** Brown Carl & Donald Staley → Kent Mine; 1980-04-01 to 1983-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Brown Carl & Donald Staley → Badger Mining Company; 1980-04-01 to 1983-07-13; source msha-controller-operator-history
- **operator_operates_mine:** Dillon Mining & Milling → Kent Mine; 1983-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brown Carl-Fred Weiling Et Al → Kent Mine; 1983-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brown Carl-Fred Weiling Et Al → Dillon Mining & Milling; 1983-07-14 to current/open; source msha-controller-operator-history