# Relationship history for MSHA mine 3402057

Current hierarchy: **Josh L  Walls → Superior Stone Supply,inc. → Triple S South Pit**

- 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:** Josh L  Walls → Triple S South Pit; 2005-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Superior Stone Supply,inc. → Triple S South Pit; 2007-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Josh L  Walls → Superior Stone Supply,inc.; 2007-12-21 to current/open; source msha-controller-operator-history