something that occurred to me about humans attempting to land on an ice world like the moons of the outer solar system - if it is a rocket coming onto something other than silicate rock, wouldn't the rock dig its own grave
presumably the same would apply to any intelligent life attempting to perform any metallurgical refining process : the heat required to separate the metal from its ore would melt the surrounding ices, and any blast furnace would very likely sink down in a mush of liquidised / volatised alkanes
Ice at those temps has some what different properties but insulation could help with that problem, we smelt metals like iron to temps high enough to melt silicates but the real problem is how do you generate heat at all?
As for the rocket the exposure to the exhaust blast would be so brief it shouldn't be a problem but there are other ways to land if it is a problem.
The only metals would be things like sodium, calcium, and possibly cesium and other light metals that dissolve in water, any really heavy metals would not be available except maybe as iron nickel meteors.