# Relationship history for MSHA mine 0102465

Current hierarchy: **Fields Johnny → Fields Coal Company Inc → Mt Hope 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:** Fields Coal Company Inc → Mt Hope Mine; 1982-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fields Johnny → Mt Hope Mine; 1982-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fields Johnny → Fields Coal Company Inc; 1982-04-01 to current/open; source msha-controller-operator-history