# Relationship history for MSHA mine 2402439

Current hierarchy: **James G  Archer; Denise  Archer → J.D.K. Construction → J.D.K. Construction 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:** J.D.K. Construction → J.D.K. Construction Mine; 2006-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James G  Archer et al → J.D.K. Construction Mine; 2006-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James G  Archer et al → J.D.K. Construction; 2006-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denise  Archer et al → J.D.K. Construction; 2006-04-14 to current/open; source msha-controller-operator-history