# Relationship history for MSHA mine 5100238

Current hierarchy: **Frederick G  Lam → Keauhou Kona Construction Corp → 120 Kue Ken**

- 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:** Frederick G  Lam et al → 120 Kue Ken; 2000-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Keauhou Kona Construction Corp → 120 Kue Ken; 2001-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frederick G  Lam et al → Keauhou Kona Construction Corp; 2001-06-01 to current/open; source msha-controller-operator-history