A nationwide stoppage at diamond mines across Botswana has entered it's fourth day. Thusands of miners continue to defy a court order to go back to work in Botswana, the world's leading producer of uncut diamonds. Union leaders are set to face charges of launching an illegal strike today. The strike came after a dispute over wage and bonus demands with Debswana mining company, owned partially by the country and partially by De Beers group, could not be resolved. The workers complain of a large gap between their wages and those of their managers.