This age focuses on late game machines and power generation.
You first need to build a sludge boiler. This gives you a chance of getting sandy coal.
After you have this you need to smelt it into a silicon boule.
You then use an Osmium Compressor to turn it into a silicon wafer.
You first need to make a pressurized reaction chamber. Fill it with Liquid Ethylene and hydrogen. Give the machine plastic sheets and it will turn into HDPE balls.
You then put these HDPE balls in a enrichment chamber to make HDPE Sheets.
To make silicon you combine HDPE sheets and infused silicon wafers.