# Relationship history for MSHA mine 2200761

Current hierarchy: **John V  Bindewald → East Pearl Sand And Gravel → East Pearl Sand And Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Double M Sand & Gravel → East Pearl Sand And Gravel; 2005-03-08 to 2009-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Michael E  Metzler → East Pearl Sand And Gravel; 2005-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael E  Metzler → Double M Sand & Gravel; 2005-03-08 to 2009-03-24; source msha-controller-operator-history
- **operator_operates_mine:** East Pearl Sand And Gravel → East Pearl Sand And Gravel; 2009-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John V  Bindewald → East Pearl Sand And Gravel; 2009-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John V  Bindewald → East Pearl Sand And Gravel; 2009-03-25 to current/open; source msha-controller-operator-history