# Relationship history for MSHA mine 2003093

Current hierarchy: **Gene  Klos → Progressive Mining Corp → CHURCHILL 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Progressive Mining Corp → CHURCHILL PIT; 1998-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gene  Klos → CHURCHILL PIT; 1998-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gene  Klos → Progressive Mining Corp; 1998-08-01 to current/open; source msha-controller-operator-history