Use "unmerchantable" in a sentence

1. This research develops technologies for efficient, economical Bioconversion of forest thinnings, unmerchantable timber and mixed species to produce renewable fuels, chemicals, fibers and polymers.

2. Forest Biomass feedstocks fall into one of two categories: forest residues left after logging timber (including limbs, tops, and culled trees and tree components that would be otherwise unmerchantable) or whole-tree Biomass harvested explicitly for Biomass