The Indian businessman, a college dropout who first tried his luck as a diamond trader before turning to coal, has become the world’s third-richest person.
The government has scrapped plans to introduce a 10% export tax on gold as part of the tax reform bill submitted by President Gustavo Petro in early August.
New research proposes the idea that hydraulic fracturing may decrease the magnitude of seismic events and microearthquakes at certain mining operations.
The world's biggest producer of manganese said its underlying earnings for the year ended June 30 came in at $2.6 billion, compared with $489 million a year ago.