# Relationship history for MSHA mine 3304500

Current hierarchy: **Richard E  Petrozzi; John J  Petrozzi → T.P. Mining Inc. → T. P. Auger**

- 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:** John J  Petrozzi et al → T. P. Auger; 1989-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John J  Petrozzi et al → T. P. Auger; 1995-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** St. Clair Trucking, Inc. → T. P. Auger; 2003-03-04 to 2005-12-31; source msha-controller-operator-history
- **controller_controls_operator:** John J  Petrozzi et al → St. Clair Trucking, Inc.; 2003-03-04 to 2005-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Richard E  Petrozzi et al → St. Clair Trucking, Inc.; 2003-03-04 to 2005-12-31; source msha-controller-operator-history
- **operator_operates_mine:** T. P. Mining Inc. → T. P. Auger; 2006-01-01 to 2006-01-11; source msha-controller-operator-history
- **controller_controls_operator:** John J  Petrozzi et al → T. P. Mining Inc.; 2006-01-01 to 2006-01-11; source msha-controller-operator-history
- **controller_controls_operator:** Richard E  Petrozzi et al → T. P. Mining Inc.; 2006-01-01 to 2006-01-11; source msha-controller-operator-history
- **operator_operates_mine:** St. Clair Trucking Inc. → T. P. Auger; 2006-01-12 to 2006-06-30; source msha-controller-operator-history
- **controller_controls_operator:** John J  Petrozzi et al → St. Clair Trucking Inc.; 2006-01-12 to 2006-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Richard E  Petrozzi et al → St. Clair Trucking Inc.; 2006-01-12 to 2006-06-30; source msha-controller-operator-history
- **operator_operates_mine:** T.P. Mining Inc. → T. P. Auger; 2006-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John J  Petrozzi et al → T.P. Mining Inc.; 2006-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard E  Petrozzi et al → T.P. Mining Inc.; 2006-07-01 to current/open; source msha-controller-operator-history