From ground to market

By the end you will be able to

• Explain how deposit type, ore grade and strip ratio determine mining method, waste, energy use and cost, using copper, nickel, lithium and iron as examples.
• Trace the mine life cycle from exploration to reclamation and explain why new mine supply usually arrives five to fifteen years after a price signal.
• Describe the main processing routes, from flotation concentrate to smelting, SX-EW, the blast furnace, the electric arc furnace and aluminium electrolysis, and compare their energy needs.
• Work out how a custom copper smelter earns its treatment and refining charge, and why that charge collapsed when Chinese smelting capacity outran concentrate supply.
• Read a crop balance sheet and connect area, yield, fertiliser, seasons and feed conversion to the supply of grains and oilseeds.
• Identify where value and concentration sit along a commodity chain, and explain how losing the social licence to operate can stop a mine.

Contents

1. Part 1 What the ground offers: deposits, grades and waste

   Every mined commodity starts as a geological accident: a place where nature pushed an element far above its average in the crust. The kind of accident decides most of what follows: how the ore is mined, how much waste is moved, how much energy is spent and which by-products come along. This part covers the main deposit types, the long fall in grades and the waste that follows.

   • Deposit type, not just tonnage, sets the economics of a mine
   • Nickel and lithium each come from two deposit types with different chains
   • Grades have fallen for a century, and technology has mostly kept pace
   • Strip ratios measure the waste you move to reach the ore
2. Part 2 From discovery to closure: the mine life cycle and how ore is extracted

   A deposit is not yet supply. It becomes supply only after it is found, proved economic, permitted, financed and built, and each step takes years. This part follows that sequence and explains why it makes mineral supply slow to answer prices. It then surveys the main extraction methods: open pits, underground mines, solution mining and dredging.

   • Exploration has gambler's odds and turns resources into reserves
   • New mine supply arrives years after the price signal
   • Open pits give way to underground mines as deposits deepen
   • Solution mining and dredging recover minerals without digging hard rock
3. Part 3 Turning rock into metal: concentration, smelting and refining

   Almost nothing leaves a mine in saleable form. Ore is crushed and concentrated near the mine, then smelted and refined, often in another country. Each step sheds mass, uses energy and supports a business with its own margins. This part follows copper, iron and aluminium through those steps and ends with the arithmetic of how a custom smelter is paid.

   • Beneficiation concentrates ore so the costly steps handle less rock
   • Pyrometallurgy and hydrometallurgy are two roads to pure copper
   • Iron and aluminium show how energy shapes the metallurgical route
   • A custom smelter earns a fee that rises and falls with concentrate supply
4. Part 4 Hydrocarbons and harvests: the other extraction chains

   Oil, gas and crops reach market by chains that look different from mining but obey similar rules. Geology or land sets the starting cost, technology shifts it, and processing turns one raw material into many products. This part covers oil reservoirs and shale, what a refinery does with a barrel, and how land, yield, fertiliser, seasons and livestock shape food supply.

   • Oil needs a source rock, a reservoir and a trap, unless you frack the source
   • A refinery splits a barrel into cuts, then cracks heavy cuts into light ones
   • Crop supply is area times yield, plus last year's stocks
   • Seed, fertiliser and feed conversion drove the farm productivity revolution
5. Part 5 Where value sits, and the licence to keep digging

   A commodity chain is a sequence of businesses with different margins, risks and degrees of concentration. Mining is often spread across many countries; processing is often concentrated in one. This part asks where value and market power sit, why China came to process so much of the world's ore, why producer countries now push back, and why a mine needs its neighbours' consent as well as a permit.

   • Value and concentration sit in different links of the chain
   • Producer countries now fight to keep processing at home
   • A social licence to operate now decides whether mines open and stay open
6. Wrap-up Key terms, try it in the table, final quiz, sources