# Relationship history for MSHA mine 2103509

Current hierarchy: **Jerry  Rypkema → County Line Aggregate, Inc. → County Line - Larson 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Jerry  Rypkema → County Line - Larson Pit; 2002-06-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** County Line Aggregate, Inc. → County Line - Larson Pit; 2005-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Rypkema → County Line Aggregate, Inc.; 2005-07-26 to current/open; source msha-controller-operator-history