 So there could be emissions in the process if you use a dirty fuel for producing the heat, right? Heat can be produced via clean electricity or fossil fuel or anything else. But the beauty of our process is that actually can be substantially lower carbon or even carbon negative under a wide range of energy sources, including the use of those dirtier fuels. And the reason that is, is because the calcium silicate rock, A, does not contain any CO2. So we eliminate 60% of the emissions just by using a different rock.