# Relationship history for MSHA mine 2003481

Current hierarchy: **Tracy R  Kenny; Mike D  Kenny → Kenny Trucking & Excavating → Kenny 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

- **operator_operates_mine:** Kenny Trucking & Excavating → Kenny Pit; 2013-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mike D  Kenny et al → Kenny Pit; 2013-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike D  Kenny et al → Kenny Trucking & Excavating; 2013-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tracy R  Kenny et al → Kenny Trucking & Excavating; 2013-08-05 to current/open; source msha-controller-operator-history