Keystone Constructors, Inc. Gaffney, SC Industry: Construction Founded: 2002 Years Honored YearRankGrowth rate 2013 59 45.970% 2007 92 32.080% Aggie Leadership James R. Penn Class of 1977 President, Owner AboutAbout Aggie 100Application ProcessTimelineFAQHonorees202220212020201920182017201620152014201320122011201020092008200720062005Summit AwardContactPress
