There are two bands that have used the name Chelsea Grin:
These are photos from concerts where Chelsea Grin played, so they may be of other bands that played the concert as well.
The Thrash and Burn Tour 2010 Jul 28, 2010 Mesa, Arizona, United States Uploaded by Vincent Alexander Brignoni
Thrash and Burn Tour Jul 23, 2010 Las Vegas, Nevada, United States Uploaded by Akheart