# Relationship history for MSHA mine 0502724

Current hierarchy: **Fillip Nichulas → Dixie Mining & Milling Corp → Dixie 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Western States Mining & Mineral Corp → Dixie Mine; 1950-01-01 to 1980-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Colsey William → Dixie Mine; 1950-01-01 to 1980-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Colsey William → Western States Mining & Mineral Corp; 1950-01-01 to 1980-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Anicol Corp → Dixie Mine; 1980-06-04 to 1981-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Pomeroy W A Sr → Dixie Mine; 1980-06-04 to 1981-08-20; source msha-controller-operator-history
- **controller_controls_operator:** Pomeroy W A Sr → Anicol Corp; 1980-06-04 to 1981-08-20; source msha-controller-operator-history
- **operator_operates_mine:** Dixie Mining & Milling Corp → Dixie Mine; 1981-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fillip Nichulas → Dixie Mine; 1981-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fillip Nichulas → Dixie Mining & Milling Corp; 1981-08-21 to current/open; source msha-controller-operator-history