# Relationship history for MSHA mine 3608073

Current hierarchy: **Alex A  Chrysanthopoulos; George A  Chrysanthopoulos → Tarheel Quarry LLC → Tarheel Quarry**

- 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:** Selig Construction Company Inc → Tarheel Quarry; 1989-02-01 to 2006-08-01; source msha-controller-operator-history
- **controller_controls_mine:** Robert C  Selig Jr → Tarheel Quarry; 1989-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert C  Selig Jr → Selig Construction Company Inc; 1989-02-01 to 2006-08-01; source msha-controller-operator-history
- **operator_operates_mine:** Tarheel Quarry LLC → Tarheel Quarry; 2006-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George A  Chrysanthopoulos et al → Tarheel Quarry; 2006-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George A  Chrysanthopoulos et al → Tarheel Quarry LLC; 2006-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alex A  Chrysanthopoulos et al → Tarheel Quarry LLC; 2006-08-02 to current/open; source msha-controller-operator-history