# Relationship history for MSHA mine 3608472

Current hierarchy: **Marvin  Hays → JMW Enterprises, Inc. → JMW Mine No 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Marvin  Hays → JMW Mine No 1; 1990-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** JMW Enterprises, Inc. → JMW Mine No 1; 1994-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marvin  Hays → JMW Enterprises, Inc.; 1994-05-01 to current/open; source msha-controller-operator-history