# Relationship history for MSHA mine 2700519

Current hierarchy: **Peckham Industries Inc → Peckham Materials Corp → GMI Sand Pit**

- 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:** Peckham Industries Inc → GMI Sand Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Marc  Bourgeois et al → GMI Sand Pit; 2016-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** GMI Acquisition LLC → GMI Sand Pit; 2020-07-06 to 2026-09-22; source msha-controller-operator-history
- **controller_controls_operator:** Marc  Bourgeois et al → GMI Acquisition LLC; 2020-07-06 to 2026-09-22; source msha-controller-operator-history
- **controller_controls_operator:** Warren  Colby et al → GMI Acquisition LLC; 2020-07-06 to 2026-09-22; source msha-controller-operator-history
- **operator_operates_mine:** Peckham Materials Corp → GMI Sand Pit; 2026-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peckham Industries Inc → Peckham Materials Corp; 2026-09-23 to current/open; source msha-controller-operator-history