Runescape power mining

Question

what should i powerming on. iron or coal. my mining lvl is 50

Answer 1

iron, you get more exp per hour from it and is quicker to mine

Answer 2

I suggest that you mine coal although it takes longer to mine but you can also mine mithril and you could make them into bars and then you could smith or sell it. But if you do not want to mine mithril then maybe you could mine iron.