# Relationship history for MSHA mine 4104831

Current hierarchy: **Dennis J  Smock; Tina M  Clifton → Smock's One Stop Material LLC → Smock One Stop Material**

- 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:** Smock's One Stop Material LLC → Smock One Stop Material; 2010-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dennis J  Smock et al → Smock One Stop Material; 2010-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis J  Smock et al → Smock's One Stop Material LLC; 2010-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tina M  Clifton et al → Smock's One Stop Material LLC; 2010-08-02 to current/open; source msha-controller-operator-history