French police have arrested 11 employees and subcontractors of chemical firm AZF in connection with the explosion at the company's Toulouse plant last September.
Thirty died and more than 2,000 were injured in the disaster which a police spokesman described as 'a chemical accident'.
The concrete industry is anticipating a major increase in the use of self-compacting concrete following the adoption of the European Commission Vibrations Directive which aims to protect workers from handarm vibration syndrome. The level at which employers must measure workers' exposure is 0.5m/s 2. Risk assessments must be provided on operators and vibrations experienced by other site workers monitored.