Broken Hill global cobalt province., page-987

Boom and Bust in Broken Hill The history of the local economy of Broken Hill closely follows the cycles of boom and bust in the mining industry. From modest beginnings as a remote outback mine site in 1885, by 1905 Broken Hill had boomed. Mining wealth and the arrival of workers for the mines created a demand for infrastructure, including public buildings, public transport lines, electric power stations and water pipelines. The "boom" years saw Broken Hill's population grow to over 30,000, making it the second largest city in New South Wales. “Bust” years and automation of mine work have seen a decrease in the town’s population. While silver, lead and zinc mining is still going on in Broken Hill, new operations are being developed to produce ethical and reliable cobalt for use in batteries for electric vehicles and renewable energy storage. QUOTE from Geoscience Australia
Small beginnings can grow into behemoths as the video points out, the Broken Hill mine grew over a century with BHP creating massive wealth for Australia IMO