# Relationship history for MSHA mine 3608763

Current hierarchy: **Daniel A  Fescemyer → RFI Energy Inc → RFI Strip & Tipple**

- 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:** RFI Energy Inc → RFI Strip & Tipple; 1998-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ralph L  Wingrove → RFI Strip & Tipple; 1998-12-01 to 2007-08-21; source msha-controller-operator-history
- **controller_controls_operator:** Ralph L  Wingrove → RFI Energy Inc; 1998-12-01 to 2007-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Daniel A  Fescemyer → RFI Strip & Tipple; 2007-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel A  Fescemyer → RFI Energy Inc; 2007-08-22 to current/open; source msha-controller-operator-history