Yes, a tier 1 miner can make only copper ingots, once you reach level 10 you will have access to tier 2 lands where you can mine tin ore as well.
When you are a tier 2 Miner you can make bronze ingots which take 1 copper, 1 coal and 1 tin and also tin ingots, which take 2 tin ore and 1 coal.
When you reach level 20, you will have access to tier 3 lands, there you can mine iron ore and silver ore. From them , if you are a tier 3 miner, you can make iron ingots (2 iron and 1 coal ) and silver ingots (2 silver).
Hope its all clear now