After years of lobbying by players we have released a Silicon Filter DLC for mining. The Silicon Filter removes Silicon from mining yields, increasing yields of other minerals. This is aimed at experienced, established players who do a lot of mining. We decided to release this mini-feature as a DLC for the following reasons:

• Would not have been worth developing for free as this feature alone is unlikely to bring in new players.
• It's very much optional, people have mining for seven years without this :)
• Funds further development