The lorry driver is seriously hurt in the crash, which closed the road for more than nine hours.
A councillor says of the "hideous" homes: "I wouldn't house cows in them, let alone humans."
The cache of silver denarii were disturbed by a plough and scattered across a field, says expert.
Inspectors report insufficient staffing, inconsistent support and a language barrier among staff.
Almost 5,000 plants are seized during nine raids targeting criminal groups in a county.
Sally Linghorn says her work as a veterinary nurse has revealed a real need for the support.
The steam engine was towing a caravan, a 4x4 and a trailer at 5mph on the A47 in Norfolk.
