# Relationship history for MSHA mine 2800029

Current hierarchy: **Gary A  Mahan → Bernardsville Quarry Inc → Bernardsville Quarry Incorporated**

- 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:** Anthony Ferrante & Sons Inc → Bernardsville Quarry Incorporated; 1950-01-01 to 1987-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Ferrante Mary → Bernardsville Quarry Incorporated; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ferrante Mary → Anthony Ferrante & Sons Inc; 1950-01-01 to 1987-10-13; source msha-controller-operator-history
- **operator_operates_mine:** Bernardsville Quarry Inc → Bernardsville Quarry Incorporated; 1987-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary A  Mahan  et al → Bernardsville Quarry Incorporated; 1987-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary A  Mahan  et al → Bernardsville Quarry Inc; 1987-10-14 to current/open; source msha-controller-operator-history