Refinery

"The Refinery processes raw Vespene gas, converting it into a form which your SCVs can gather."

- Terran Adjutant

A refinery is a somewhat ramshackle and antiquated terran structure, designed to speed up the arduous process of the vespene gas mining on the more desolate terran worlds within the Koprulu Sector. Constructed on top of a geyser, the refinery processes the raw gas into a harvestable form and then automatically packages the gas into containers easily transportable by SCVs.

StarCraft
Workers may still retrieve gas from a depleted geyser, but the yield will be greatly reduced.

StarCraft II
The refinery no longer yields any gas when it is depleted.

Known Refineries

 * Kliketown Vespene Gas Refinery
 * Noranda Glacier vespene mines
 * Vespene Refinery 1138 (actually a terrazine refinery)