The All-Star Mile could be boosted by the presence of two additional Group One winners in the inaugural running of the $5 million race at Flemington.

Inspections by Racing Victoria's veterinary department on Thursday revealed Material Man, Foundry and Urban Ruler showing signs of lameness and will need to be pass another test before being allowed to start.

Material Man has been fitted with a heart bar shoe on his left foot while X-rays on Urban Ruler could not identify the source of lameness.

Foundry, himself a Group One winner and who hasn't raced since November 2017, presented with lameness when examined by two RV vets after satisfactory results undertaken on the horse in the past week.

Should the trio fail their inspections on Friday, it will pave the way for Group One winners Le Romain and Trap For Fools to gain a start.

If granted a start Le Romain and Trap For Fools will join Happy Clapper, Hartnell, Grunt, Alizee and Mystic Journey in the field as winners at Group One level.

RV vets passed a further 11 runners on Thursday with the remaining four, Balf's Choice, Hawkshot, Mystic Journey and third emergency Hellova Street, to be examined on Friday once they arrive in Melbourne.