# Relationship history for MSHA mine 0600737

Current hierarchy: **Timothy A  Coon; William E  Coon → William Coon & Son, Inc → William Coon & Son, Inc**

- 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:** William Coon & Son, Inc → William Coon & Son, Inc; 2007-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William E  Coon  et al → William Coon & Son, Inc; 2007-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William E  Coon  et al → William Coon & Son, Inc; 2007-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy A  Coon  et al → William Coon & Son, Inc; 2007-01-09 to current/open; source msha-controller-operator-history