According to exporters, China, which traditionally bought state's low grade ore, usually blended with the high grade quality, has become suspicious about Goa, as supplies have become uncertain.
"We are on the brink of losing China market. If the ban continues even for little more time then we will lose it forever," Auduth Timblo, Chairman, Fomento Resources, one of the biggest exporters of ore from Goa, told PTI.
"Several new countries arrive into competition, its like a wave," Timblo said.
Before the ban, India's exports to China were 100 million metric tonnes annually, which has now plummeted to less than 10 MMT per year.
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Goa Mineral Ore Exporters Association (GMOEA), a body of mineral exporters, has termed the current situation as "reliability crisis".
"Goa has been reliable supplier of mineral for China. But the reliability is getting dented due to current ban," GMOEA Secretary Glenn Kalavampara said, adding that the East Asian country has started looking out for new suppliers.