Geo-Productos Mexicanos S.A. de C.V. and Tenax S.A. de C.V. have joined the Mexico chapter of the Geosynthetic Materials Association (GMA). GMA Mexico holds frequent seminars for the Mexican construction industry, providing engineers, architects and contractors focused information on sound geosynthetic design, selection and installation. GMA Mexico’s newest members become the fifth and sixth to join this year—a sign of strength in Latin America’s infrastructure improvement market. For information regarding the activities of GMA and GMA Mexico, contact the Geosynthetic Materials Association, 1801 County Rd. B W., Roseville, MN 55113-4061; +1 651 225 6942, fax +1 651 631 9334, e-mail dfhalloran@ifai.com, Web site .