Archie Anderson suffers from Cerebral Palsy and has difficulties walking. But a £50,000 operation in St Louis Hospital, Missouri, could give him a chance.
The workers, who are being made redundant, have donated their entire social fund to three charities - one of which is Archie's charity.
The donation from the Rio Tinto workers brings his total to more than £45,000.
Marie Anderson, Archie's mother, has tweeted: "Thank you so much to the workers at Alcan for your wonderful donation to Archies Dream."
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A Scarborough man who was part of a gang who conned a 74-year-old woman out of her £17,000 life savings has been jailed for 15 months.
It happened around 8:50pm on Tuesday 18 July at Ladbrokes on Borough Road. One man jumped over the counter, brandishing a large knife.
Rising levels of violence and theft are behind the largest annual increase in crime recorded by police in a decade, figures show.