heavy-oil-barrel-fill.png	heavy-oil-barrel.png	heavy-oil-barrel-fill.png
light-oil-barrel-fill.png	light-oil-barrel.png	light-oil-barrel-fill.png
lubricant-barrel-fill.png	lubricant-barrel.png	lubricant-barrel-fill.png
petroleum-gas-barrel-fill.png	petroleum-gas-barrel.png	petroleum-gas-barrel-fill.png
sulfuric-acid-barrel-fill.png	sulfuric-acid-barrel.png	sulfuric-acid-barrel-fill.png
water-barrel-fill.png	water-barrel.png	water-barrel-fill.png