Just checked the Aerad flight supplement. Saurimo doesn't have a PCN published but it lists "DC8", guess this is the max size aircraft you can take in there. I last flew in there about 10years ago, from memory it is a paved surface but very rough with many large potholes. No idea if the runway has been upgraded since then. A lot of IL76's and B727's used to operate into there- which might explain the potholes!
Sorry can't be of more help.
Regards
JD