# Relationship history for MSHA mine 2103559

Current hierarchy: **John L  Weber; Gary  Manea → Certified Aggregate Products → Manea 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

- **operator_operates_mine:** Certified Aggregate Products → Manea Pit; 2006-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John L  Weber  et al → Manea Pit; 2006-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John L  Weber  et al → Certified Aggregate Products; 2006-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Manea  et al → Certified Aggregate Products; 2006-10-24 to current/open; source msha-controller-operator-history