Hello all,
A little off-topic, but as some of you may be aware, the heritage rail tunnels in the Toowoomba Range are to be lowered to allow higher-clearance trains through them.

A professional magazine I get mentioned use of laser scanning as part of the lowering of these tunnels.
Details are at: http://bennettandbennett.com.au/projects/rail-clearance-upgrade-toowoomba-laidley/ and a video is at: https://player.vimeo.com/video/220393665

Regards,
John
--