# Relationship history for MSHA mine 4003629

Current hierarchy: **Brad J  Poynter; Darlene  Poynter → Stone Sales and Service → Blaine Smith 1**

- 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

- **controller_controls_mine:** Darlene  Poynter et al → Blaine Smith 1; 1999-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stone Sales and Service → Blaine Smith 1; 2024-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darlene  Poynter et al → Stone Sales and Service; 2024-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad J  Poynter et al → Stone Sales and Service; 2024-09-30 to current/open; source msha-controller-operator-history