# Relationship history for MSHA mine 3401753

Current hierarchy: **Akins John Z → J & A Enterprises Inc → J & A Enterprises Incorporated**

- 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:** J M Materials → J & A Enterprises Incorporated; 1991-04-01 to 1995-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Maxwell Joe → J & A Enterprises Incorporated; 1991-04-01 to 1995-01-02; source msha-controller-operator-history
- **controller_controls_operator:** Maxwell Joe → J M Materials; 1991-04-01 to 1995-01-02; source msha-controller-operator-history
- **operator_operates_mine:** J & A Enterprises Inc → J & A Enterprises Incorporated; 1995-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Akins John Z → J & A Enterprises Incorporated; 1995-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Akins John Z → J & A Enterprises Inc; 1995-01-03 to current/open; source msha-controller-operator-history