The first mention I’ve seen of Kandahar as a destination for the current projects.

New Afghan railroad to boost trade and supply troops

By Jonathon Burch

KABUL, May 25 (Reuters) – Afghanistan’s first railway in almost a century is due to be completed before the year’s end, officials said on Tuesday, with the aim of not only boosting the country’s economy but also supplying NATO troops there.
[…]
While acknowledging the current stretch of railway may be modest, the ADB says the plan is to eventually extend the connection southwest to the city of Herat and south to Kandahar city, linking the network to Iran and Pakistan.
[more]
Source: Reuters, 2010-05-25

There are actually the “rusting shells” of three steam locomotives.