# Relationship history for MSHA mine 4300660

Current hierarchy: **Charles J  Holcomb → CHARLES HOLCOMB & SON → CHARLES HOLCOMB ENTERPRISES**

- 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:** Charles Holcomb & Son → CHARLES HOLCOMB ENTERPRISES; 2006-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles J  Holcomb  et al → CHARLES HOLCOMB ENTERPRISES; 2006-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles J  Holcomb  et al → Charles Holcomb & Son; 2006-11-15 to current/open; source msha-controller-operator-history