# Relationship history for MSHA mine 4202414

Current hierarchy: **Amber Dawn  Rollins; Richard Kelly  Rollins → Rollins Construction & Trucking → Rollins Mobile**

- 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:** Rollins Construction & Trucking → Rollins Mobile; 2005-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Toni L  Rollins et al → Rollins Mobile; 2005-06-15 to 2025-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Toni L  Rollins et al → Rollins Construction & Trucking; 2005-06-15 to 2025-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Richard W  Rollins et al → Rollins Construction & Trucking; 2005-06-15 to 2025-04-07; source msha-controller-operator-history
- **controller_controls_mine:** Richard Kelly  Rollins et al → Rollins Mobile; 2025-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard Kelly  Rollins et al → Rollins Construction & Trucking; 2025-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amber Dawn  Rollins et al → Rollins Construction & Trucking; 2025-04-08 to current/open; source msha-controller-operator-history