# Relationship history for MSHA mine 3003138

Current hierarchy: **Peckham Industries Inc → Wingdale Materials LLC → WINGDALE MINE**

- 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 → WINGDALE MINE; 1986-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** American Contract Miners Inc → WINGDALE MINE; 1989-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Patterson Materials Corp → WINGDALE MINE; 1995-04-01 to 1999-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Peckham Industries Inc → Patterson Materials Corp; 1995-04-01 to 1999-12-09; source msha-controller-operator-history
- **operator_operates_mine:** American Mine Services Inc → WINGDALE MINE; 1999-12-10 to 2000-11-26; source msha-controller-operator-history
- **controller_controls_operator:** American Contract Miners Inc → American Mine Services Inc; 1999-12-10 to 2000-11-26; source msha-controller-operator-history
- **operator_operates_mine:** Wingdale Materials LLC → WINGDALE MINE; 2000-11-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peckham Industries Inc → Wingdale Materials LLC; 2000-11-27 to current/open; source msha-controller-operator-history