Below is a list of Railcar Unloading manufacturers from North Carolina. As a method of transferring materials or products from railcars to storage such as silos or bins, railcar unloading can be accomplished through a variety of machines, the most common of which are railcar unloading conveyors. Railcar unloading conveyors are a safe and efficient way to unload railcars compared to human labor, which can be slow, inefficient, noisy and detrimental to the employee.