# Relationship history for MSHA mine 3000835

Current hierarchy: **Peckham Industries Inc → Wingdale Materials LLC → WINGDALE QUARRY SURFACE #75**

- 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:** Colonial Sand & Stone Company Inc → WINGDALE QUARRY SURFACE #75; 1950-01-01 to 1983-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Utilities & Industries Corp → WINGDALE QUARRY SURFACE #75; 1950-01-01 to 1991-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Utilities & Industries Corp → Colonial Sand & Stone Company Inc; 1950-01-01 to 1983-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Colonial Aggregates Inc → WINGDALE QUARRY SURFACE #75; 1983-04-01 to 1986-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Thomas  Marroccoli → WINGDALE QUARRY SURFACE #75; 1983-04-01 to 1986-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Marroccoli → Colonial Aggregates Inc; 1983-04-01 to 1986-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Wingdale Materials LLC → WINGDALE QUARRY SURFACE #75; 1986-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peckham Industries Inc → WINGDALE QUARRY SURFACE #75; 1986-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peckham Industries Inc → Wingdale Materials LLC; 1986-08-01 to current/open; source msha-controller-operator-history