John Laing Services has been charged with breaching the Health and Safety at Work Act (1974) Section 2, which covers employers' negligence.
A Health and Safety Executive spokesperson said John Laing Services had been charged because it was in overall charge of the site. She said: "The men had been working for subcontractor EPL but John Laing was responsible for the operation of the machinery." EPL has not been charged.
A coroner's court verdict on the deaths of the two men, which took place in 1995, prompted coroner Sir Montague Levine to call for a shake-up in safety standards for sites using cradles and scaffold towers. He returned a verdict of unlawful killing.
The HSE spokesperson said the case had taken eight years to reach court because of a police investigation into the accident. The police had thought of charging Laing with unlawful killing, but handed the case back to the HSE in 2001 after deciding not to.
The men worked for EPL but John Laing was responsible for operation of the machinery
Health and Safety Executive official
Anderson suffered a ruptured heart artery and had a collapsed lung and fractured ribs. Fear fractured his skull, leg and arm as well as suffering brain damage, a ruptured liver and spleen.
Laing plc was unavailable for comment.
The Old Bailey heard that an HSE investigation found that Pettigrove fell 20 ft from the edge of a floor slab. Pettigrove, 42, has been unable to work since.