Business Products Services Quality Contact Presentation GERARDO MARTIN, SL was established in 1998 as a continuation of the family work undertaken at the beginning of the 80s, it is present in construction works in the provinces of Salamanca and Zamora providing quality concrete. From the beginning the work philosophy of this company has been based on offering its clients a perfect combination of Quality and Service, being our main activity the sale, manufacture and distribution of Concrete as well as the commercialization of aggregates, extraction and commercialization of gravel and all kinds of transport. GERARDO MARTIN SL has implemented a quality management system since 2004 in accordance with ISO 9001: 2000 and certified by BSI (British Standards Institution), with which it seeks to increase the degree of customer satisfaction at the same time as the entire staff is motivated and involved in achieving this goal. GERARDO MARTIN SL develops the productive activity with great sensitivity and concern for the Environment and for carrying out the work with maximum safety, so the staff periodically receives the necessary training in this matter. GERARDO MARTIN SL is an active member of ANEFHOP (National Association of Prepared Concrete Manufacturers) and ASTASA (Association of Autonomous Transporters of Salamanca). © 2009 Gerardo Martín, SL | Design and layout: Ramiro Sánchez

Business Presentation Works / Clients Installations Products Concrete Grading Aggregates Mortars Services Transport / Excavations Quality Certifications Quality Policy Contact Zahorras We have plots for the extraction of natural gravel and we have the necessary equipment for such extraction and transport to work. For any planned production volume, a minimum of four (4) samples are tested, adding one (1) more for every ten thousand cubic meters (10,000 m3) or fraction, in excess of fifty thousand cubic meters (50,000 m3). The following tests are carried out on each sample: Sieve granulometry, according to UNE-EN 933-1. Liquid limit and plasticity index, according to UNE 103103 and UNE 103104, respectively. Los Angeles coefficient, according to UNE-EN 1097-2. Sand equivalent, according to UNE-EN 933-8 and, where appropriate, methylene blue, according to UNE-EN 933-9. Natural humidity, according to UNE-EN 1097-5. © 2009 Gerardo Martín, SL | Design and layout: Ramiro Sánchez