workers ignite cad-weld powder in a crucible

workers ignite cad-weld powder in a crucible, cad-welding, exothermic bonding, exothermic welding, high-visibility jacket, high-visibility vest, light rail, men, muni, night, ntk, railroad construction, railroad tracks, rails, railway tracks, reflective jacket, reflective vest, safety helmet, safety vest, san francisco municipal railway, thermite welding, track maintenance, track work, welder, workers, working workers ignite cad-weld powder in a crucible, cad-welding, exothermic bonding, exothermic welding, high-visibility jacket, high-visibility vest, light rail, men, muni, night, ntk, railroad construction, railroad tracks, rails, railway tracks, reflective jacket, reflective vest, safety helmet, safety vest, san francisco municipal railway, thermite welding, track maintenance, track work, welder, workers, working

workers ignite cad-weld powder in a crucible

Workers ignite cad-Weld powder in a crucible.­

For more information about cad-welding (i.­e.­ exothermic welding), read en.­wikipedia.­org/­wiki/­Exothermic_­welding.

View more photos of railroad workers replacing a Muni lightrail track section on Church street in San Francisco.

cad-welding
exothermic bonding
exothermic welding
high-visibility jacket
high-visibility vest
light rail
men
muni
night
NTK
railroad construction
railroad tracks
rails
railway tracks
reflective jacket
reflective vest
safety helmet
safety vest
san francisco municipal railway
thermite welding
track maintenance
track work
welder
workers
working
January 29, 2012
190 Church St, San Francisco, CA 94114, USA