An article such as a conveyor belt includes an elastomeric composition containing high-aspect ratio nanofibers having a diameter in a range from 10 nm to 1,000 nm, and an aspect ratio in a range from 500 to 15,000. The nanofibers may enable a reduction in the total amount of all reinforcing agent(s) in the composition while providing suitable mechanical properties, which, in turn, reduces average rolling resistance of the elastomeric composition. This makes the elastomeric composition particularly suitable for a bottom cover layer of a conveyor belt.

A conveyor system supporting a conveyor belt in a trough shape through a transition portion in which an elevation of the conveyor belt changes, the transition portion comprising an upward change in elevation and a subsequent downward change in elevation.