Compressed Redstone is used in the Metallurgic Infuser.
Compressed redstone is created by inserting a redstone dust into an Enrichment Chamber.
In Mekanism v9, compressed redstone yields 80 units of redstone in the Metallurgic Infuser, the same as 8 redstone.
Compressed redstone can be used in a Metallurgic Infuser with Osmium Ingot in order to create Basic Control Circuit, instead of a redstone. It is more efficient to use this refined redstone material as it is worth 8 times more than a normal redstone.