Caterpillar has made a key announcement on the progress of its autonomous truck program. Together with Australian dealer WesTrac, CAT has signed a Memorandum of Understanding (MOU) with Fortescue Metals Group to implement an autonomous mining solution for Fortescue’s new Solomon iron ore mine.

India's GVK Power, a unit of infrastructure major GVK Group, which had inked a deal to purchase two of Hancock Prospecting's thermal coal mines in Australia for around $2.4 billion, is set to raise $1.2 billion as debt to part fund its acquisition. The Hyderabad-based GVK Power has roped in ICICI Bank to syndicating the $1.2 billion loan. Sanjay Reddy, vice chairman of GVK, signed an agreement with Gina Rinehart, chairman of Hancock, earlier in June.

A treasure of gold, jewelry and diamonds worth over $24 billion by some estimates has been unearthed from the vaults of a temple in India. Image is from YouTube news report on the same story.

ProSep announced it was awarded $1.8 million in new contracts to supply a produced water treatment system for installation on a deepwater Gulf of Mexico facility and crude dehydration equipment for two oil sands facilities located in Alberta, Canada.

Dow Jones reports Argentina's Mendoza Province has lifted its suspension of the multibillion dollar Rio Colorado potash mine project being developed by Brazilian mining company Vale SA. Mendoza's Environmental Secretariat has allowed Vale to move forward with the mine after the company agreed to submit reports on its local hiring and procurement practices to the local authorities, the provincial government said in a statement.

IC Potash, which hopes to build a potash mine in New Mexico, on Tuesday said a study it paid consultants UK-based CRU Strategies to conduct on its Ochoa project found “excellent market potential” for future production of sulphate of potash (SOP).

The Yorkshire Post reports Sirius Minerals has started a concept study at its York Potash project, paving the way for mining to begin at the UK’s only seam of potash. Sirius has secured mineral rights for 631 sq km of land between Whitby and Scarborough with plans to open a new potash mine and create up to 5,000 jobs. Sirius is about to start drilling two temporary boreholes in the North York Moors National Park. Once it gets an idea of what the potash seam looks like under the ground it can plan where to site the mine.

Quebec's first diamond mine took another step forward today, with the launch of the federal environment assessment process, The Montreal Gazette reports: The Canadian Environmental Assessment Agency is accepting public comment on the project, along with suggestions of environmental issues that should be considered in the comprehensive study of the project. Image of the Renard project, by Stornoway Diamond Corp.

Canada's biggest precious metals stocks were up an average 5.5% in late afternoon trade on Tuesday led by Endeavour Silver and Silvercorp Metals which both added around 12%. First Majestic Silver was up 9% and Silver Wheaton 6%. The index with an average market capitalization of US$7.7bn was outperforming a lacklustre broader market with bellwethers Barrick and Goldcorp also making substantial gains. Weak economic news from Europe, lingering concerns about the Greek debt crisis and media reports that China may raise interest rates have lured investors back to precious metals.