With a deafening whir and a flash of sparks, Campbell shaved the worn, misshapen subway wheel to the proper smoothness and angle needed for a safe and steady ride. The wheel truer was 60 years old; the subway car 31, and it had logged 1.5 million miles.
MBTA mechanics keep old subway cars rolling
Read it all, now.
Don't miss any of your favorite stories again. Read the stories that matter to you as much as you want, whenever you want when you subscribe to BostonGlobe.com.
Get full access today for just 99¢