BNSF 9669 leads a North Antelope Mine to Holcomb, KS (Sunflower Electric Power Plant) coal train up the slight grade out of Keenesburg, CO. Even though the grade is only 0.7% at this location, coal loads struggle on the 10 mile climb from Roggen to Keenesburg. With second motor isolated and a throttle 7 limit for fuel conservation, coal train's speed will drop down to 15 to 13 mph on this section of BNSF's Brush Subdivision.