# Relationship history for MSHA mine 4003530

Current hierarchy: **Dwayne  Potter → Potter Materials, LLC → Potter Materials LaFollette**

- 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:** Potter South East LLC → Potter Materials LaFollette; 2019-12-20 to 2026-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Dwayne  Potter → Potter Materials LaFollette; 2019-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dwayne  Potter → Potter South East LLC; 2019-12-20 to 2026-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Potter Materials, LLC → Potter Materials LaFollette; 2026-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dwayne  Potter → Potter Materials LaFollette; 2026-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dwayne  Potter → Potter Materials, LLC; 2026-09-01 to current/open; source msha-controller-operator-history