# Relationship history for MSHA mine 3601833

Current hierarchy: **Blaschak Holding Corp → Blaschak Anthracite Corporation → Franklin Breaker**

- 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:** Franklin Coal Company → Franklin Breaker; 1950-01-01 to 1987-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Franklin I  Miller Jr → Franklin Breaker; 1950-01-01 to 1987-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Franklin I  Miller Jr → Franklin Coal Company; 1950-01-01 to 1987-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Blaschak Holding Corp → Franklin Breaker; 1981-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Franklin Coal Sales Inc → Franklin Breaker; 1987-03-19 to 1990-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Cynthia  Blaschak → Franklin Breaker; 1987-03-19 to 1990-10-08; source msha-controller-operator-history
- **controller_controls_operator:** Cynthia  Blaschak → Franklin Coal Sales Inc; 1987-03-19 to 1990-10-08; source msha-controller-operator-history
- **operator_operates_mine:** Blaschak Anthracite Corporation → Franklin Breaker; 1990-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blaschak Holding Corp → Blaschak Anthracite Corporation; 1990-10-09 to current/open; source msha-controller-operator-history