Abstract: A rack (2) for use with a mining machinery haulage system (1), comprising a plurality of individual segments (16) so located with respect to one another as to define the length of the rack (2), and each segment being provided with at least one formation (17) and each connected to an adjacent segment (16) by a connector (18) articulated to both segments (16) to which it is common, and with the pitch of the segments (16) and hence the pitch of their formations (17), controlled either by adjacent segment-to-segment abutment, or by segment-to-connector-to-segment abutment. The invention also includes a mining machinery haulage system (1) provided with racks (2).