Elon Musk’s Boring Company has started to produce bricks made from tunnelled rock, according to a tweet from the company.
In the tweet, the start-up tunnelling company shared a video of the bricks in production.
The interlocking bricks are made from excavated spoil from tunnel boring and, according to Musk, could be used as a surface finish to houses.
The Boring Company website states that the company is investigating technologies that will recycle the earth into useful bricks to be used to build structures and potentially be used in tunnel lining.
In March, Musk tweeted that the Boring Company would be launching Lego style bricks made from tunnelling rock.
At the time he said the interlocking bricks would be “rated for California seismic loads, so super strong, but bored in the middle, like an aircraft wing spar, so not heavy.” In a further tweet back in March, Musk explained that the bricks would be sold in sets – starting with pyramids.