Beech, black walnut, butternut, chestnut, catalpa, hemlock and tamarack trees are also common.
Three other shafts of the Tamarack Company, and three of the neighbouring Calumet and Hecla mine, have depths of between 4000 and 5000 ft.
More than one-half of the product is yellow pine and the remainder is principally red fir and tamarack.
Plantations have been made in America with an economic view, the tree growing much faster, and producing good timber at an earlier age than the native hackmatack (or tamarack), while the wood is less ponderous, and therefore more generally applicable.
In the northern part of the state the great pine belt stretches from the head of Lake Superior westward to the confines of the Red River Valley, while along the north border and in the north-east the forest growth is almost exclusively tamarack and dwarf pine.