Tech Age is a technology mod with 4 development stages:
TA1: Iron Age
Use tools and aids such as coal burners, coal burners, gravel sieves, hammers and hoppers to mine and process the necessary ores and metals.
TA2: Steam Age
Build a steam engine with drive axles and use it to operate your first ore processing machines.
TA3: Oil Age
Find and extract oil, built railways for oil transportation. A power plant provides the necessary electricity for your machines. Electric light illuminates your industrial plants.
TA4: Future Age
Renewable energy sources such as wind, sun and biofuels help you to leave the oil age. With modern technologies and intelligent machines you set out into the future.
Meridium is an alloy of steel and mesecons crystals. Meridium ingots can be made with the coal burner from steel and mesecons crystals. Meridium glows in the dark. Tools made of Meridium also light up and are therefore very helpful in underground mining.