Some companies focus on processing municipal solid waste (MSW) via plasma-arc plasma gasification. In this application, MSW is generally shredded, then fed into the plasma-arc plasma gasification reactor with very limited and calculated volumes of oxygen or air. The syngas produced is cleaned and then used to make electricity. The vitrified product is still produced by the plasma-arc plasma gasification process. As mentioned previously, this is a glass-like byproduct, known as vitrified slag, does not leach out. This material has more uses than ash from conventional gasification, including as insulation material, flooring tiles and garden blocks. A recent article cited that plasma-arc plasma gasification technology can generate 816 kWh per ton of MSW.