US securities regulators have fined five brokers $1.65m apiece for failing to retain internal emails for three years.
The fines, levied on Deutsche Bank Securities, Goldman Sachs, Morgan Stanley, Salomon Smith Barney and US Bancorp Piper Jaffray, are part of a crackdown by regulators who want electronic records kept for auditing purposes.
Some of the brokers failed to prevent departing employees from deleting emails, while others taped over back-up records after a year, or failed to store emails in an organised fashion, according to the regulators.
Warming was most pronounced in Siberia region
The tank will be subjected to high stresses and loads via dozens of hydraulic cylinders during testing
'Sunlit wet sidewalk' provides evidence of methane rainfall on the north pole of Saturn's moon Titan
Methane rainfall indicates the start of the summer season in Titan's northern hemisphere
Scientists believe there could be other hydrides or superhydrides with super conducting properties