An investigation of the use of in-line thickened tailings to create composite tailings at a sand to fines ratio, SFR, of 4:1 without any further chemical amendment is presented in this paper. At this SFR, it was found that the composite tailings made with in-line thickened tailings (ILTT-CT) had a static segregation point at 53% solids content and the composite tailings made with the parent material, cyclone overflow tailings (typical new fine tailings) without any additive, had a static segregation point at 59% solids content. The segregation boundary of the ILTT-CT with no added coagulant is comparable to that of the gypsum treated MFT-CT. It is also at a lower solids content, that is less susceptible to segregation, than the segregation boundary of old MFT-CT. ILTT-CT hydraulic conductivity is found to be controlled by the high hydraulic conductivity of the ILTT fines and the undrained shear strength of the ILTT-CT is considerably higher than that of the ILTT fines at the same fines void ratio. As well, as no coagulant is required, there is no detrimental effect to the reclaim water chemistry. The combination of faster consolidation and higher shear strength means that the ILTT-CT will be able to be reclaimed much earlier than MFT-CT. Judicial deposition techniques may result in it being reclaimed as it is being deposited.