# Relationship history for MSHA mine 4703353

Current hierarchy: **Kody C  DuChateau → KCG Excavating Inc. → Portable Wash Plant #02**

- 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

- **controller_controls_mine:** Craig  DuChateau et al → Portable Wash Plant #02; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** DMK, Inc. → Portable Wash Plant #02; 2003-06-03 to 2013-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Craig  DuChateau et al → DMK, Inc.; 2003-06-03 to 2013-08-14; source msha-controller-operator-history
- **operator_operates_mine:** KCG Excavating Inc. → Portable Wash Plant #02; 2013-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kody C  DuChateau → Portable Wash Plant #02; 2013-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kody C  DuChateau → KCG Excavating Inc.; 2013-08-15 to current/open; source msha-controller-operator-history