Taken with permission.
#6257 was a Hybrid locomotive with FIAT GAIA Chasis & EMD 12-645E power plant and other modified elements.
8280 inside TTF Shops changing axle and traction motor package.
#NCA8281Sur with an empty train near Terminal 6 private port.
A duplex of ALCo´s pass Cañada de Gomez station with the authorization of an employee