We developed a process over the years that has worked very well. (We have harvested between 1,000 to 2,000 pounds of potatoes every year for 30+ years)
We dig them and if it's not bone dry, let them sit out on the ground for 2-3 hours, so we can knock some of the dirt off before moving them. We have baskets for perfect tubers, baskets for "damaged but maybe salvageable" ones, and a 5 gallon pail for rotting or blighted potatoes.
Once we get them off the field, we spread them out to dry... usually on a flatbed wagon, but the lawn or porch will work. We cover them with a tarp to keep light off. In 3-5 days, we sort them... by then, any blight or spoilage will visibly manifest, and those are burned (or fed to pigs if they are just too damaged to store). The rest are sorted into crates (perfects are separate from those with any damage) and put in the root cellar. We use up the damaged ones first.
(Of course, "too damaged to eat" is subjective! We once sent up 4 bushels of damaged tubers to our Amish neighbors for their pigs. The mother took 9ne look at them and confiscated them for the kitchen! She gave the peels and trimmings to the pigs!)
Summerthyme