# Relationship history for MSHA mine 3304129

Current hierarchy: **Richard E  Petrozzi; John J  Petrozzi → T P Mining Inc → Pipo #51**

- 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:** Monroe Mining Inc → Pipo #51; 1988-01-01 to 1989-09-17; source msha-controller-operator-history
- **controller_controls_mine:** Thomas P  Petrozzi → Pipo #51; 1988-01-01 to 1989-09-17; source msha-controller-operator-history
- **controller_controls_operator:** Thomas P  Petrozzi → Monroe Mining Inc; 1988-01-01 to 1989-09-17; source msha-controller-operator-history
- **operator_operates_mine:** T P Mining Inc → Pipo #51; 1989-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John J  Petrozzi et al → Pipo #51; 1989-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John J  Petrozzi et al → T P Mining Inc; 1989-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard E  Petrozzi et al → T P Mining Inc; 1989-09-18 to current/open; source msha-controller-operator-history