return {
    --'transport-belt',
    --'fast-transport-belt',
    'express-transport-belt',
    --'underground-belt',
    --'fast-underground-belt',
    'express-underground-belt',
    --'small-electric-pole',
    --'medium-electric-pole',
    --'big-electric-pole',
    --'substation',
    'electric-mining-drill',
    'electric-mining-drill-2',
    'electric-mining-drill-3',
    'burner-mining-drill',
    'pumpjack',
    'car',
    'tank',
    'spidertron',
    'straight-rail',
    'curved-rail',
    'rail-signal',
    'rail-chain-signal',
    'train-stop',
    'locomotive',
    'cargo-wagon',
    'fluid-wagon',
    'artillery-wagon'
}