JOHANNESBURG (miningweekly.com) – Platinum group metals (PGMs) producer Sedibelo Resources Limited has announced the expansion of operations at Pilanesberg Platinum Mines into contiguous deposits of Sedibelo Central, Magazynskraal and Kruidfontein – known as the Triple Crown properties – with an estimated resource base in excess of 60-million four-element (4E) PGM ounces, considered one of the world’s largest undeveloped PGM deposits.