# Relationship history for MSHA mine 0202968

Current hierarchy: **Steven A  Cignoli → Oliver Stone w/a Twist → Chocolate Royale**

- 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:** Oliver Stone w/a Twist → Chocolate Royale; 2002-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steven A  Cignoli → Chocolate Royale; 2002-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven A  Cignoli → Oliver Stone w/a Twist; 2002-02-20 to current/open; source msha-controller-operator-history