# Relationship history for MSHA mine 1517948

Current hierarchy: **Quillen Bennett & Kermit Hall → Floyd Ridge Mines Inc → No 2**

- 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

- **controller_controls_mine:** Cornelius  Rowe → No 2; 1992-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Quillen Bennett & Kermit Hall → No 2; 1997-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ro-Co Resources Inc → No 2; 1997-06-01 to 1997-10-21; source msha-controller-operator-history
- **controller_controls_operator:** Cornelius  Rowe → Ro-Co Resources Inc; 1997-06-01 to 1997-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Floyd Ridge Mines Inc → No 2; 1997-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quillen Bennett & Kermit Hall → Floyd Ridge Mines Inc; 1997-10-22 to current/open; source msha-controller-operator-history