Tarmac Group centenary in 1953, Tarmac was processing over two million tons of slag a year, its road surfacing had developed into a significant civil engineering business, and its Vinculum subsidiary "had become one of the major precast concrete undertakings in the country." Under Robin Martin's leadership, Tarmac moved from being an important regional force to a national roadstone and contracting business. Acquisitions played a major role in Tarmac's growth. While leading the roadstone division, Martin had been responsible in 1959 for the acquisition of local competitor Tarslag and Crow Catchpole, which gave it a greater presence in the south east. In
Playground surfacing States and Canada the International Play Equipment Manufacturers Association (IPEMA) provides a third-party certification service enabled by appointing a testing laboratory to determine if a particular surface conforms to ASTM standards F1292, F1951, and F2075. IPEMA’s seal on a provider’s document is clear evidence that the covered material has met these tests. Owner/operators should request a copy of this certification for their own protection. Some suppliers do not offer proof of certification and mere membership in IPEMA does not mean that a particular supplier’s material has been certified. A list of certified suppliers can be found at www.ipema.org. Playground surfacing