 ATLANTA--BUSINESS WIRE--Williams Industrial Services Group Inc. NYSE American: WLMS, an infrastructure, construction and maintenance services company, today announced that it will participate in the Jefferies Virtual Industrial Conference on August 3, 2021. A general presentation by management will be held at 8:00 a.m. Eastern, with one-on-one calls scheduled throughout the day. If institutional investors would like to participate, please contact your Jefferies representative or Williams i 