Finger and Toe Models have released a 15mm/28mm cardstock Refinery terrain set.
From their announcement:
Finger and Toe Models announces the release of the 15 and 28mm card stock Refinery, the ultimate skirmish setting for your commandos or security troops. Build a massive complex easily because of the modular construction. Fight a 28mm skirmish in the morning and a 15mm assault in the afternoon – with the same set. Designed to be used for twentieth century through near-future engagements, Refinery is impressive: the cracking towers can stand up to two feet tall. Joined by walkways, they’re the perfect hiding spot for your snipers. Build a tank farm spreading out beyond the towers. Oversee it all from the air conditioned comfort of your office. Refinery is perfect for your industrial skirmishes.
Remember, every Finger and Toe model comes with smoosh assurance: if ya’ll smoosh your Refinery, a new set waits your summons from hard drive and printer.