# Relationship history for MSHA mine 4801817

Current hierarchy: **Jamie  Killion; Brian  Killion → H2K → H2K Rental Crusher #1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** H2K → H2K Rental Crusher #1; 2018-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian  Killion et al → H2K Rental Crusher #1; 2018-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian  Killion et al → H2K; 2018-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jamie  Killion et al → H2K; 2018-08-28 to current/open; source msha-controller-operator-history