# Relationship history for MSHA mine 4608905

Current hierarchy: **Larry  Stacy → Larry Stacy Augering Inc → #1 Surface 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

- **controller_controls_mine:** Larry  Stacy → #1 Surface Mine; 1992-02-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Larry Stacy Augering Inc → #1 Surface Mine; 2001-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Stacy → Larry Stacy Augering Inc; 2001-06-01 to current/open; source msha-controller-operator-history