Sun Xiaodi received the Nuclear-Free Future Award in November for publicly exposing the dangers of radiation pollution at a uranium mine in
The activist said people living near the site had a high incidence of cancerous tumours, leukaemia, birth defects, miscarriages and other afflictions because of the pollution.
But he was unable to fly to the
The human rights group explained that the activist has campaigned against illegal mining practices in
This kind of mining has led to serious pollution problems in the area. For local Tibetan medical workers, nearly half of the deaths in the region are in fact due to some forms of cancer, according to the human rights group.
Mr Sun himself has also been diagnosed with an abdominal tumour.
He was thrown into jail in April 2005 for eight months after speaking to foreign journalists about the pollution and was again detained and released in 2006.
According to HRC, the activist has been the victim of constant harassment and attacks by unidentified persons since winning the award. And police have entered his home several times and cut off power and water supplies.
His family asked local authorities last November to allow the activist to go to
Mr Sun was a former employee of the Gansu No. 792 Uranium Mine in the