Coal

Type D
Door Operating Mechanism

Miner Type "D" door operating mechanisms provide safe, fast, reliable discharge from open top hoppers, increasing safety, productivity and car utilization. The exclusive locking system of the Type "D" uses a primary over-center lock and a secondary cam lock to assure doors are sealed tight. When opened, doors automatically stay in the full open position for efficient, trouble-free unloading.

  • Efficient, trouble-free unloading
  • One person safe operation from either side of the car
  • Secure, exclusive locking system

Simple. Reliable. Proven.

About Miner Enterprises

Miner Enterprises, Inc., was founded in 1894 and has grown to become a leading supplier of engineered and manufactured rail car components. In addition to side bearings, the company provides draft gears, discharge gates, hatch covers, and other key components for railroads, freight car builders, and repair shops in more than 50 countries. Miner is based in Geneva, Illinois View More


1 (630) 232-3000