Yep, Surveyors were certainly a good test: https://en.m.wikipedia.org/wiki/Surveyor_program https://en.m.wikipedia.org/wiki/Surveyor_program There were actuall

Yep, Surveyors were certainly a good test: https://en.m.wikipedia.org/wiki/Surveyor_program https://en.m.wikipedia.org/wiki/Surveyor_program There were actually theories that Moon might be covered in fine dust heavy landers might just sink in, so one of the objectives was testing that out. And thankfully the theory turned out to be incorrect. :)