Many of the seashells like oysters and conch shells are particularly interesting for recycling within the concrete and construction industries. The chemical makeup of these shells demonstrates strength properties that will help bind and strengthen concrete when added as aggregate. This chemical makeup is specifically focused on the calcium carbonate (CaCO3), which makes up 95% of the shell (Yoon, 2002). If the shell strength could be put to use instead of waste, then it would greatly diminish the seafood industries impact on the environment, while simultaneously stimulating the construction industry.