I just returned from another business trip and earned 6,216 Delta SkyMiles. This brings me to a total of 49,939 SkyMiles. I also used my rewards credit card for all business expenses during the trip, earning us a $25 cash back reward.
I leave town again in a 1-1/2 weeks and may reach Gold Medallion status, resulting in double the SkyMiles every time I fly for the next 12 months.