Aluminum   $ 2.2760 kg        |         Cobalt   $ 26.625 kg        |         Copper   $ 9.0438 kg        |         Gallium   $ 329.01 kg        |         Gold   $ 75748.77 kg        |         Indium   $ 419.06 kg        |         Iridium   $ 151912.28 kg        |         Iron Ore   $ 0.1075 kg        |         Lead   $ 2.0385 kg        |         Lithium   $ 11.844 kg        |         Molybdenum   $ 66.495 kg        |         Neodymium   $ 63.378 kg        |         Nickel   $ 15.817 kg        |         Palladium   $ 28501.64 kg        |         Platinum   $ 30025.58 kg        |         Rhodium   $ 149500.97 kg        |         Ruthenium   $ 13181.81 kg        |         Silver   $ 894.47 kg        |         Steel Rebar   $ 0.4344 kg        |         Tellurium   $ 106.67 kg        |         Tin   $ 29.790 kg        |         Uranium   $ 182.43 kg        |         Zinc   $ 2.6910 kg        |         
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Edinburgh-based company Gravitricity has announced its plans to develop underground gravity energy storage projects for deep mine operators in Slovenia, Germany, the Czech Republic, and Finland This innovative approach repurposes end-of-life mine shafts, which would otherwise face expensive infilling and decommissioning costs

Gravitricity’s energy storage system, known as GraviStore, utilizes heavy weights—up to 12,000 tonnes—suspended in deep shafts by cables attached to winches


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