# Relationship history for MSHA mine 1601510

Current hierarchy: **Byron E  Talbot → BYRON TALBOT CONTRACTOR, INC → VACHERIE SAND 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:** Byron E  Talbot → VACHERIE SAND PIT; 2010-10-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BYRON TALBOT CONTRACTOR, INC → VACHERIE SAND PIT; 2011-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Byron E  Talbot → BYRON TALBOT CONTRACTOR, INC; 2011-03-09 to current/open; source msha-controller-operator-history