Between 1928 and 1934, it erected Broken Hill’s first steel headframe and modern crushing and concentrating plant in steel and concrete.  In 1940, Broken Hill South LTD acquired the Central Mine and, in 1943, the BHP Mine;  the British, Junction and Block 14 Mines were acquired in 1962.  The South Mine closed in 1972 and all leases were purchased by Minerals, Mining and Metallurgy (MMM).  The mine produced about 20 million tons of ore valued at 300 million pounds and paid 65 million in dividends.                                                             ZINC MINE Zinc Corporation was formed in 1905 to treat zinc – rich tailings accumulated at various mines.  A concentration mill was erected on the British Mine lease and, when the supply of tailings was nearly exhausted, the South Blocks Mine was acquired in 1911.  This marked the transition from ore treatment to mining.  In 1936, operations at the Zinc Mine were completely restructured with the sinking of a new shaft and plant and concentration mill. Zinc Corporation became Consolidated Zinc Corporation in 1949 and merged with Rio Tinto to become Conzinc Rio Tinto of Australia (CRA) in 1962.  New Broken Hill Consolidated (NBHC) joined the consortium in 1971 to form Australian Mining and Smelting Co LTD, which merged with North Broken Hill LTD to form Pasminco LTD in 1988.  The concentration mill and Main Shaft ceased operation in 1988 and subsequent activity was focused at the NBHC Mine.  The Zinc Mine produced 41 million tonnes of ore during the period 1911 – 89. NBHC MINE New Broken Hill Consolidated was formed by Zinc Corporation in 1936 to explore leases to the south of the Zinc Mine.  Ore production commenced in 1944.  The first all – concrete headframes in Australia were erected at Haulage and Service Shafts in 1946, and a large mill commenced in 1952.  The concentration mill and Haulage Shaft were refurbished in 1988 to take ore from both Zinc and NBHC Mines.  The mine produced about 52 million tonnes of ore up to 1996 and present annual ore production is about 2.5 million tonnes.  Based on current ore reserves,  mining will continue to the year 2006 when Pasminco will close leaving Broken Hill, without a mine.