its attachment to the bottom jaw 115 is also applicable to the attachment of the top blade 130 to the top jaw 125 as illustrated in fig7 c and 7d when the railroad rail 112 is sufficiently stressed due to the brittle nature of the rail 112 it will bend only slightly before breaking the energy released when the rail 112 breaks typically manifests itself in energy transmitted to the severed parts as shown in fig7 d while segment 112 a is retained by the jaws 115 125 segment 112 b becomes an airborne projectile moving in a direction away from the bottom jaw 115 for that reason during this cutting operation for safety the bottom jaw 115 of the jaw set 110 must be closest to the operator while the top jaw 125 must be furthest from the operator to insure this the exterior surface 235 of the top jaw 125 is marked with indicia 240 to assist the operator in the proper orientation of the jaw set 110 during operation in one embodiment the indicia 240 may be a highly visible paint covering a substantial portion of the top jaw 125 such that the highly visible paint and therefore the top jaw 125 should not be visible to the operator during a cutting.