# Relationship history for MSHA mine 4003152

Current hierarchy: **Brad J  Poynter; Darlene  Poynter → Stone Sales & Service, Inc. → Stone Sales & Service ,Inc.**

- 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:** Stone Sales & Service, Inc. → Stone Sales & Service ,Inc.; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brad J  Poynter et al → Stone Sales & Service ,Inc.; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad J  Poynter et al → Stone Sales & Service, Inc.; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darlene  Poynter et al → Stone Sales & Service, Inc.; 1999-11-01 to current/open; source msha-controller-operator-history