Manufacturing in Michigan was allowed back to work as of May 11, 2020. We are open, but our hours have changed.

Mann Metal Office Team

Our Team Members who have contributed immensely to our Growth
Tammy Collins Ceo sitting at desk in white jacket smiling at work

Tammy Collins


Tammy joined Mann Metal Finishing in 1988 as the office manager. Her role evolved over the years and prepared her to step into the role’s as Owner, CEO, and Board Member in 2014 when her father sold the business.

Greg Collins President and Sales sitting at desk in a white shirt with glasses smiling at work

Greg Collins

President & Sales

Greg has been with the company since 1984. Starting in production, progressing to supervision, then sales and customer relations. His current role as Board Director and President are the result of his many years of experience and dedication.

Gary Ackerman Plant Manager stitting at Desk in orange shirt smiling at work

Gary Ackerman

Plant Manager

Gary began working in production in 1991. His hard work and dependability made him a natural selection as leadman early on, eventually production & delivery supervisor, and now Plant Manager.

Tammy Ackerman Hr Manager wearing grey shirt at desk with computer smiling at work

Tammy Ackerman

HR Manager

Tammy has worked in the office on and off over the last 20+ years. Her positive energy and love for people made her the logical choice for Personnel and Human Resources.

Renee Loomis Customer Service wearing green shirt at desk with computer smiling at work

Renee Loomis

Customer Service

Renee started in administration in 2002. Her ability to quickly learn and juggle a variety of tasks equipped her for the current role of Shipping, Production and Quality Coordinator. She works closely with customers on orders, billing, quality and anything in between.