Police swarm area to question monks, close down Internet.
The move followed increased scrutiny following resistance to a loyalty campaign.
Villagers petition China's central government over 'collusion' between local authorities and mining companies.
Family members bringing food and clothes were also turned away, he says.
They had called out for Tibetan freedom and the return of exiled spiritual leader the Dalai Lama.
More are being forced into resettlement towns far from traditional grazing areas.
He had called for Tibetan freedom and the Dalai Lama's return.
One had tried only to lift the injured protester into a vehicle to be taken for help.
They demand 'equality of education,' calling for the right to be taught in Tibetan.
He was charged with inciting others to oppose Beijing's rule in Tibet.
The move aims to further tighten restrictions in areas opposed to Beijing's rule.
Local authorities had proceeded with excavations without central government permission.
Khenpo Kartse has been detained since December last year.
It is the second protest challenging Chinese rule to be staged in the area in less than a month.
Tenzin Delek Rinpoche is serving a life term following what supporters call a conviction on trumped-up charges.
Monks must seek approval from authorities for travel and other activities.
Recently built religious structures must be demolished, and 'underage' monks expelled from the monasteries.