# Relationship history for MSHA mine 3003989

Current hierarchy: **Rachel  Smith → Smith's Heavy Equipment, Inc. → Pegson 1000 603B14728**

- 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

- **operator_operates_mine:** Smith's Heavy Equipment, Inc. → Pegson 1000 603B14728; 2016-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rachel  Smith → Pegson 1000 603B14728; 2016-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rachel  Smith → Smith's Heavy Equipment, Inc.; 2016-12-16 to current/open; source msha-controller-operator-history