According to the National Union of Mine Workers (NUM), the South African mining sector continued to experience unique challenges related to health and safety and these required appropriate legislative measures that would assist to deter the situation. The National Union of Mine Workers provided that it continued to engage other stakeholders on the best acceptable practice that would help to alleviate the problems associated with health and safety in the mining sector. In May 2009, in its National Congress, the union resolved the following: "Through the Mine Health and Safety Council force the mining industry to develop more advanced geophones technology capacity for earlier signs of possible seismic events".