MARIKANA (AFP) - South African police on Saturday fired rubber bullets, raided worker hostels and seized traditional weapons at platinum giant Lonmin in a crackdown on rising unrest in the key mining industry. A military helicopter arrived as backup after security forces used rubber bullets to disperse hundreds of workers in a shantytown near where police shot dead 34 people last month at the London-listed company’s Marikana mine. “Wherever we see this unruly behaviour and people taking the law into their hands by embarking on unprotected gatherings and illegal gatherings, we are definitely going to act,” police spokesman Thulani Ngubane told AFP.