If you have enough money to build industries willy-nilly, find a place near the map edge where you can build several of them close together, then build a single station around them. Bear in mind the possible restrictions:
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Oil refineries are the most constrained, as they must be close to the map edge.
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Factories might be unsuitable for desert terrain.
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Additional GRFs may require industries to be near towns, or may impose other annoying restrictions.


