# Relationship history for MSHA mine 2103401

Current hierarchy: **Jason D  Kolles → Kolles Sand & Gravel, Inc. → Roadrunner-1**

- 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

- **operator_operates_mine:** Kolles Sand & Gravel, Inc. → Roadrunner-1; 2003-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason D  Kolles → Roadrunner-1; 2003-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason D  Kolles → Kolles Sand & Gravel, Inc.; 2003-12-02 to current/open; source msha-controller-operator-history