Crusher dust can be various rock types including basalt and blue metal is basalt but dense non vesicular basalt. Basalt is the most fertile volcanic parent rock being fine grained because the lava cooled fast unlike granite that cooled slowly.
Also known as decomposed granite, blue metal dust or crusher dust. This is a fine crushing of our local blue metal. It is commonly used as a base for artificial lawns, in paving screeds and can be used in pathways and driveways. Compacts down well while still allowing good drainage. Cost effective and available in bulk.
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