# Relationship history for MSHA mine 1401681

Current hierarchy: **Keith P  Scott → Keith Scott & Company → Mission Valley Site**

- 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:** Keith P  Scott → Mission Valley Site; 2005-11-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Keith Scott & Company → Mission Valley Site; 2007-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith P  Scott → Keith Scott & Company; 2007-08-20 to current/open; source msha-controller-operator-history