Toronto, Canada (December 21, 2018) – Mammoth Resources Corp. (TSX-V: MTH), (the “Company”, or “Mammoth”) is pleased to announce the signing of an option agreement with Centerra Gold Inc. (“Centerra”) to option Mammoth’s Tenoriba precious metal property located in the prolific Sierra Madre precious metal belt in southwestern Chihuahua State, Mexico. Centerra has the option to earn up to a 70% interest in Tenoriba upon total project expenditures of US$9.0 million over a seven-year period, expenditure amounts which can be accelerated depending on exploration success.