by Seniors News
A POSSIBLE breakthrough in one of Australia's most infamous cold cases - the disappearance of the Beaumont children - has been described as the "best lead that there has ever been".
South Australian police will excavate a new area of the Castalloy factory in North Plympton after a review by the Major Crime Investigation Branch.
Channel Seven conducted its own investigation leading to new information and possible evidence.
The case of the missing Beaumont children - Jane, 9, Arna, 7, and Grant, 4 - shocked the nation after they vanished from Glenelg beach on January 26, 1966.
However, former SA Police detective Bill Hayes believes the new information is the best hope they have of cracking the $1 million-reward mystery.
"It is the best lead that there ever has been in the case of these children - the best information that we've ever had," Mr Hayes told ABC Radio Adelaide.
"You do get information through from time to time, but unfortunately like most of these things, some of the information you can discount immediately.
"Just now and again though, one piece starts to make things gel a little bit."
The factory, once owned by Adelaide businessman Harry Phipps, was originally searched in 1966 and again in 2013.
Major Crime detectives reportedly admitted in 2013 that Mr Phipps was not a suspect while claiming allegations implicating him had been investigated and discounted. Mr Phipps died in 2004.