# Relationship history for MSHA mine 3607616

Current hierarchy: **Pagnotti Enterprises Inc → William Penn Breaker Inc → William Penn 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:** Anthracite Technology Inc → William Penn Breaker; 1984-09-01 to 1987-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Sgarlat → William Penn Breaker; 1984-09-01 to 1987-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Sgarlat → Anthracite Technology Inc; 1984-09-01 to 1987-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Anthracite Technology Inc → William Penn Breaker; 1987-06-02 to 1991-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Donald A  Sullivan → William Penn Breaker; 1987-06-02 to 1991-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Donald A  Sullivan → Anthracite Technology Inc; 1987-06-02 to 1991-07-07; source msha-controller-operator-history
- **operator_operates_mine:** William Penn Breaker Inc → William Penn Breaker; 1991-07-08 to 1994-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Nancy L  Lindenmuth → William Penn Breaker; 1991-07-08 to 1994-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Nancy L  Lindenmuth → William Penn Breaker Inc; 1991-07-08 to 1994-04-30; source msha-controller-operator-history
- **operator_operates_mine:** William Penn Breaker Inc → William Penn Breaker; 1994-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pagnotti Enterprises Inc → William Penn Breaker; 1994-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pagnotti Enterprises Inc → William Penn Breaker Inc; 1994-05-01 to current/open; source msha-controller-operator-history