# Relationship history for MSHA mine 4608713

Current hierarchy: **James B  Simpkins → Select Mining Inc → Mine #5**

- 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

- **controller_controls_mine:** James B  Simpkins → Mine #5; 1990-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Central Contracting Inc → Mine #5; 1998-04-01 to 1998-10-11; source msha-controller-operator-history
- **controller_controls_mine:** J Steven  Cvechko Jr → Mine #5; 1998-04-01 to 1998-10-11; source msha-controller-operator-history
- **controller_controls_operator:** J Steven  Cvechko Jr → Central Contracting Inc; 1998-04-01 to 1998-10-11; source msha-controller-operator-history
- **operator_operates_mine:** Select Mining Inc → Mine #5; 1998-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James B  Simpkins → Select Mining Inc; 1998-10-12 to current/open; source msha-controller-operator-history