Mesa Exploration Corp. Signs Letter Agreement with J.P. Mariwell Inc. VANCOUVER, British Columbia, Dec. 22, 2017 (GLOBE NEWSWIRE) -- Mesa Exploration Corp. (TSX-V:MSA) (OTCPK:MSAJF) (the “Company” or “Mesa”) is pleased to announce that it has signed a Letter Agreement (“Letter Agreement”) with J.P. Mariwell Inc. (“JPM”) to acquire all of the issued and outstanding Common shares of JPM, an applicant under Health Canada's "Access to Cannabis for Medical Purposes Regulations" (“ACMPR”).