CALGARY, ALBERTA — (Marketwired) — 05/31/13 — Marksmen Energy Inc. ("Marksmen" or the "Company") (TSX VENTURE: MAH) has retained Mustagh Resources Ltd ("Mustagh") to design the first 3D seismic program related to the Houghton Project in Ohio. The Company has now received the 3D seismic program from Mustagh and the Company will now commence the tendering for bids from Ohio area 3D seismic providers.The Company anticipates that it will be in a position to begin i