Kress unitized bottom dump coal haulers have a high payload to weight ratio, a high power to weight ratio and a Kress suspension system which is up to five times softer than the tires. These features allow the unit to travel at higher speeds, which translates into greater productivity and efficiency. This is especially important since most mines will be experiencing longer hauls in the coming years. For more information contact Kress through this web site or contact your local Caterpillar dealer.