# Relationship history for MSHA mine 3000037

Current hierarchy: **Peckham Industries Inc → Peckham Materials Corp → PECKHAM MATERIALS PLEASANT VALLEY QUARRY**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Peckham Industries Inc → PECKHAM MATERIALS PLEASANT VALLEY QUARRY; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dutchess Quarry & Supply Co Inc → PECKHAM MATERIALS PLEASANT VALLEY QUARRY; 1950-01-01 to 2016-02-22; source msha-controller-operator-history
- **controller_controls_mine:** John P  Arborio et al → PECKHAM MATERIALS PLEASANT VALLEY QUARRY; 1950-01-01 to 2012-05-10; source msha-controller-operator-history
- **controller_controls_operator:** John P  Arborio et al → Dutchess Quarry & Supply Co Inc; 1950-01-01 to 2012-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Peckham Industries Inc → PECKHAM MATERIALS PLEASANT VALLEY QUARRY; 2012-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peckham Industries Inc → Dutchess Quarry & Supply Co Inc; 2012-05-11 to 2016-02-22; source msha-controller-operator-history
- **operator_operates_mine:** Peckham Materials Corp → PECKHAM MATERIALS PLEASANT VALLEY QUARRY; 2016-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peckham Industries Inc → Peckham Materials Corp; 2016-02-23 to current/open; source msha-controller-operator-history