Model PC1800-6 mining excavator features improvements in its engines, bucket, cab and more. Twin Komatsu engines provide 908 horsepower. Engine oil and filter changes are now set at 500-hour intervals, compared to the previous 250 hours. Its 15.7-cubic-yard bucket can load a 100-ton truck in four to five passes. The unit comes equipped with Komatsu's Vehicle Health Monitoring System.