# Relationship history for MSHA mine 0405899

Current hierarchy: **Scott  Farley; Kurt  Kernen → Kernen Construction → LT106 Jaw**

- 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

- **controller_controls_mine:** Kurt  Kernen et al → LT106 Jaw; 1998-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kernen Construction → LT106 Jaw; 2015-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Kernen et al → Kernen Construction; 2015-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Farley et al → Kernen Construction; 2015-06-15 to current/open; source msha-controller-operator-history