# Relationship history for MSHA mine 2602666

Current hierarchy: **Brad A  Stocks; Ruth E  Stocks → Stocks Trucking Company LLC → Amy Mine**

- 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:** Stocks Trucking Company LLC → Amy Mine; 2009-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ruth E  Stocks et al → Amy Mine; 2009-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ruth E  Stocks et al → Stocks Trucking Company LLC; 2009-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad A  Stocks et al → Stocks Trucking Company LLC; 2009-03-04 to current/open; source msha-controller-operator-history