# Relationship history for MSHA mine 3608414

Current hierarchy: **Anthony  Blaschak Jr → Penn Equipment Corporation → Frackville Bank**

- 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

- **controller_controls_mine:** Anthony  Blaschak Jr → Frackville Bank; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C L S Coal Corp → Frackville Bank; 1993-05-01 to 1997-08-04; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Blaschak Jr → C L S Coal Corp; 1993-05-01 to 1997-08-04; source msha-controller-operator-history
- **operator_operates_mine:** Joseph Petrole Coal Sales → Frackville Bank; 1997-08-05 to 1999-02-08; source msha-controller-operator-history
- **controller_controls_mine:** Joseph R  Petrole Sr → Frackville Bank; 1997-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph R  Petrole Sr → Joseph Petrole Coal Sales; 1997-08-05 to 1999-02-08; source msha-controller-operator-history
- **operator_operates_mine:** C L S Coal Corp → Frackville Bank; 1999-02-09 to 2011-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Blaschak Jr → C L S Coal Corp; 1999-02-09 to 2011-03-17; source msha-controller-operator-history
- **operator_operates_mine:** Penn Equipment Corporation → Frackville Bank; 2011-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anthony  Blaschak Jr → Frackville Bank; 2011-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Blaschak Jr → Penn Equipment Corporation; 2011-03-18 to current/open; source msha-controller-operator-history