# Relationship history for MSHA mine 2602820

Current hierarchy: **David  Jacks; Jerry  Jacks → Dwight Patent 10945 Mining LLC → Dwight Patent 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

- **operator_operates_mine:** Dwight Patent 10945 Mining LLC → Dwight Patent Mine; 2019-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  Jacks et al → Dwight Patent Mine; 2019-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Jacks et al → Dwight Patent 10945 Mining LLC; 2019-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Jacks et al → Dwight Patent 10945 Mining LLC; 2019-03-27 to current/open; source msha-controller-operator-history