# Relationship history for MSHA mine 2401253

Current hierarchy: **Fetter Hilbert → Century Silver Mines Inc → Century Silver Mines Incorporated**

- 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:** Sparrow Resources Ltd → Century Silver Mines Incorporated; 1950-01-01 to 1984-01-24; source msha-controller-operator-history
- **controller_controls_mine:** Fayram B Dale → Century Silver Mines Incorporated; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fayram B Dale → Sparrow Resources Ltd; 1950-01-01 to 1984-01-24; source msha-controller-operator-history
- **operator_operates_mine:** Century Silver Mines Inc → Century Silver Mines Incorporated; 1984-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fetter Hilbert → Century Silver Mines Incorporated; 1984-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fetter Hilbert → Century Silver Mines Inc; 1984-01-25 to current/open; source msha-controller-operator-history