Question

what connection do you think existed between immigration and mineral production during the second half of the nineteenth century?

Answer 1

The immigrants most likely found work in the mines which increased the amount of minerals being mined.

Answer 2

I believe immigration was resulted in the increase of mineral production

The increase in immigration provide a lot of people on the labour market that minerals producers can use at a relatively cheaper prices. This increase the mineral companies' workforce along with their annual mineral production in nineteenth century.