Abstract: A pinless haulage drive chain formed of a series of rack-form link components each having complementary shaped parts at opposite ends, one end of which has a projection of T-shaped in plan view and the other end having a recess of T-shape in plan view to receive as a clearance fit the projection of an adjoining link component. Each link component also has a central spine of upstanding rack formation and integral therewith on either side thereof two walls forming a saddle having a wall of lesser depth to be used as a trapping means for a mineral mining machine on its traverse along a conveyor, and a deeper wall to be encompassed by trapping means for the link itself via a shoulder extending from this wall. The chain may be used in a scraper chain conveyor comprising conveyor line pans having a range of movement therebetween.