['graphics/icons/advanced-circuit.png', 'graphics/icons/alien-artifact.png', 'graphics/icons/battery.png', 'graphics/icons/coal.png', 'graphics/icons/concrete.png', 'graphics/icons/copper-cable.png', 'graphics/icons/copper-ore.png', 'graphics/icons/copper-plate.png', 'graphics/icons/electric-engine-unit.png', 'graphics/icons/electronic-circuit.png', 'graphics/icons/engine-unit.png', 'graphics/icons/explosives.png', 'graphics/icons/flying-robot-frame.png', 'graphics/icons/hazard-concrete.png', 'graphics/icons/iron-gear-wheel.png', 'graphics/icons/iron-ore.png', 'graphics/icons/iron-plate.png', 'graphics/icons/iron-stick.png', 'graphics/icons/landfill.png', 'graphics/icons/plastic-bar.png', 'graphics/icons/processing-unit.png', 'graphics/icons/rail.png', 'graphics/icons/raw-wood.png', 'graphics/icons/rocket-control-unit.png', 'graphics/icons/rocket-fuel.png', 'graphics/icons/rocket-part.png', 'graphics/icons/rocket-structure.png', 'graphics/icons/satellite.png', 'graphics/icons/solid-fuel.png', 'graphics/icons/steel-plate.png', 'graphics/icons/stone-brick.png', 'graphics/icons/stone.png', 'graphics/icons/sulfur.png', 'graphics/icons/wood.png']