MTL

Materials Technology Laboratory (US)
Found on http://www.translationdirectory.com/glossaries/glossary262.php

MTL

[transport company] MTL Trust Holdings was an English bus, coach and train operator based in Liverpool. MTL was originally the operating company of the Merseyside Passenger Transport Executive. To comply with the Transport Act 1985, this was divested into a new independent company, Merseyside Transport Limited (MTL). Merseytravel retained a...
Found on http://en.wikipedia.org/wiki/MTL_(transport_company)

mtl

more than likely
Found on http://www.noslang.com/dictionary/m/

MTL

The ISO 4217 currency code for the Maltese Lira.
Found on http://www.duke.edu/~charvey/Classes/wpg/bfglosm.htm
No exact match found