Subject: File No.
From: Samuel J Brock

March 6, 2017

Dear Commissioner Piwowar,

I would like to formally express my support for the continued implementation of the Conflict Minerals Rule.

I do not want my purchases to support violence, and the Conflict Minerals Rule has made it easier for me to determine which companies are taking steps to ensure their products are not linked to it.

Please keep the Conflict Minerals Rule fully intact.