2008-05-15T14:18:07-04:00 4 C:/Rails/rails_apps/gray/public/market/image/4/chem.jpg chemical plant construction, petrochemical plant construction, chemical plant contractors, chemical plant engineering, acid plant construction, gas plant construction Biotech & Chemical Plant Construction For biotech and chemical plant construction, Gray Construction will take care of all engineering needs and deliver quality results in time. Chemical Plant Construction | Gray Construction 2009-02-10T17:24:28-05:00