# Relationship history for MSHA mine 3607277

Current hierarchy: **Paulisick Barry → Paulisick Excavating → Paulisick Strip**

- 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:** Peter Paulisick Jr Excavating → Paulisick Strip; 1982-03-01 to 1989-02-15; source msha-controller-operator-history
- **controller_controls_mine:** Paulisick Pete Jr → Paulisick Strip; 1982-03-01 to 1989-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Paulisick Pete Jr → Peter Paulisick Jr Excavating; 1982-03-01 to 1989-02-15; source msha-controller-operator-history
- **controller_controls_mine:** Paulisick Barry → Paulisick Strip; 1985-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paulisick Excavating → Paulisick Strip; 1989-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paulisick Barry → Paulisick Excavating; 1989-02-16 to current/open; source msha-controller-operator-history