# Relationship history for MSHA mine 3401692

Current hierarchy: **Johnson Wendell & Jeffrey → Eastern Oklahoma Resources Inc → Kanima Mine**

- 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:** Eastern Oklahoma Resources Inc → Kanima Mine; 1989-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Wendell & Jeffrey → Kanima Mine; 1989-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Wendell & Jeffrey → Eastern Oklahoma Resources Inc; 1989-08-01 to current/open; source msha-controller-operator-history