Just check the freindly mine map. Its a click and drag pull down in the upper left corner of the map screen in GW. Once you know where the stuff is at you dont need to follow the escort. Just plot a course through the safe area. There is also a convoy route map and a speed/distance table in the same place incase you didnt know.
Also, you can choose not to have freindly mines when you install GW. Its in the options window when installing. Easy fix is to just re-install GW and make sure you check the options you want.