# Relationship history for MSHA mine 3503926

Current hierarchy: **Floyd B Foster; Madelyn D Jackson; Carl W Foster → Bandon Concrete LLC → Stone Butte 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:** Bandon Concrete LLC → Stone Butte Quarry; 2021-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Madelyn D Jackson et al → Stone Butte Quarry; 2021-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Madelyn D Jackson et al → Bandon Concrete LLC; 2021-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl W Foster et al → Bandon Concrete LLC; 2021-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Floyd B Foster et al → Bandon Concrete LLC; 2021-12-09 to current/open; source msha-controller-operator-history