By using BOS slag waste there is no energy cost, emissions, or environmental impact associated with mining of a mineral reagent. Since BOS slag is a waste material that has been traditionally landfilled, there is also millions of tons of legacy material that is classified as a hazardous waste. Currently, grinded BOS slag is sold as a cheaper alternative to sand for certain applications wherein its volumetrically stability is not an issue. Unfortunately, the grinding results in several fractions: from 0 to 40 m of which we have chosen 6 to 10 mm for use as high value anti-slip road surfacing aggregate. The material is ideal for aggregate once used in the ZAP-C 3 process, thus the ZAP-C 3 process consumes a valueless waste product and any energy costs associated with grinding the BOS slag are already integrated within current process.