The first reports of sulphur composites were made nearly 140 years ago but it is only recently that sulphur based corrosion‐resistant concrete became available. The article describes the properties and advantages of the material.

Telephone companies worldwide are rushing to equip their networks with fibre optics in place of conventional copper wiring. In 1984 orders stood at 40 million and British Telecommunications claim that during 1985 26,000 km of “light‐lines” will be used. Forward projections indicate that by...