1958 See how Nickel-toughened propellers proved their mettle in Arctic pack ice. Inco Nickel Published May 16, 2024 at 1526 × 2048 in USA Cold War ← Previous Next → 1958 See how Nickel-toughened propellers proved their mettle in Arctic pack ice. Inco Nickel Source: www.flickr.com / x-ray_delta_one