If a Mine is not fully built and nothing is building it, a minelayer cannot pick up the building again
Minelayer vehicles should be able to assist in constructing any of the buildings available to it, so that if a command is issued, cancelling the progress of a mine being built, then another command can be issued to continue the progress of the mine
the only way for a minelayer vehicle to construct anything is for it to start the construction of it
start building a heavy mine (works with anything, really) with a minelayer vehicle. Then cancel construction. Then realize that you cannot issue a command to continue construction on heavy mine.
No response