Webster’s Revised Unabridged Dictionary · 1913
Thurst
Thurst (thûrst), n. (Coal Mining) The ruins of the fallen roof resulting from the removal of the pillars and stalls. Raymond.
Webster’s Revised Unabridged Dictionary · 1913
Thurst (thûrst), n. (Coal Mining) The ruins of the fallen roof resulting from the removal of the pillars and stalls. Raymond.