# Relationship history for MSHA mine 3503643

Current hierarchy: **Gary  Ervin → G L Ervin Construction Inc. → Bresse**

- 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:** Gary  Ervin → Bresse; 2002-08-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** G L Ervin Construction Inc. → Bresse; 2006-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Ervin → G L Ervin Construction Inc.; 2006-06-28 to current/open; source msha-controller-operator-history