# Relationship history for MSHA mine 0201999

Current hierarchy: **Williams Lonnie → United Consolidated Mines Inc → Sunrise 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:** Brocks Mining & Engineering → Sunrise Mine; 1980-07-01 to 1982-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Brocks Mining & Engineering → Sunrise Mine; 1980-07-01 to 1982-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Brocks Mining & Engineering → Brocks Mining & Engineering; 1980-07-01 to 1982-08-25; source msha-controller-operator-history
- **operator_operates_mine:** United Consolidated Mines Inc → Sunrise Mine; 1982-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Williams Lonnie → Sunrise Mine; 1982-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Williams Lonnie → United Consolidated Mines Inc; 1982-08-26 to current/open; source msha-controller-operator-history