I think that Salvage missiles would be usefull, as salvage lasers take quite a while to clear out a large area.
As the name suggests, when you fire a salvage missile, it acts like a normal missile apart from the fact it destroys a slightly smaller area and gives you all of the destroyed blocks.
As the name suggests, when you fire a salvage missile, it acts like a normal missile apart from the fact it destroys a slightly smaller area and gives you all of the destroyed blocks.