# Relationship history for MSHA mine 3102284

Current hierarchy: **Gary  Metzger → Metzger Removal Inc → Lippmann 3602P Jaw Crusher**

- 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:** Gary  Metzger → Lippmann 3602P Jaw Crusher; 2010-05-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Metzger Removal Inc → Lippmann 3602P Jaw Crusher; 2013-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Metzger → Metzger Removal Inc; 2013-06-10 to current/open; source msha-controller-operator-history