# Relationship history for MSHA mine 4801617

Current hierarchy: **L Dent  Huxtable; James N  Huxtable → Cadlrock Mining LLC → Huxtable Quarry**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Schmid's Dozer Service Inc. → Huxtable Quarry; 2002-06-08 to 2006-10-07; source msha-controller-operator-history
- **controller_controls_mine:** John  Schmid → Huxtable Quarry; 2002-06-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Schmid → Schmid's Dozer Service Inc.; 2002-06-08 to 2006-10-07; source msha-controller-operator-history
- **operator_operates_mine:** Cadlrock Mining LLC → Huxtable Quarry; 2006-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** L Dent  Huxtable  et al → Huxtable Quarry; 2006-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** L Dent  Huxtable  et al → Cadlrock Mining LLC; 2006-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James N  Huxtable  et al → Cadlrock Mining LLC; 2006-10-08 to current/open; source msha-controller-operator-history