# Relationship history for MSHA mine 3608499

Current hierarchy: **Albert George & Michael Keklak → Loomis Development Company → New County/Clark Operation**

- 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:** Albert George & Michael Keklak → New County/Clark Operation; 1992-07-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Loomis Development Company → New County/Clark Operation; 1995-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert George & Michael Keklak → Loomis Development Company; 1995-03-01 to current/open; source msha-controller-operator-history