A method for producing a first product and a second product from waste eggshells, comprising the steps of: separating an inner membrane component from a calcified outer shell component of the waste egg shells to produce therefrom an inner membrane fraction and a de-membraned calcified component; washing the de-membraned egg shell calcified components to remove any remaining membrane components; drying the washed de-membraned egg shell calcified components: dry-milling the dried de-membraned egg shell calcified components to produce small-diameter particles therefrom; separating the milled small-diameter egg shell calcified particles into three fractions wherein the first fraction consists of calcified particles having diameters of 3μ or less, the second fraction consists of calcified particles having diameters in a range from about 3 μ to about 7 μ, and the third fraction comprises calcified particles having diameters greater than 7 μ. dry-milling the third fraction and then separating additional quantities of the first fraction the second fraction, and if necessary, the third fraction. repeating the dry-milling step as many times as necessary to eliminate egg shell calcified particles having diameters greater than 7 μ; and separately collecting the first fraction wherein the calcified egg shell particles have diameters of 3 μ or less as a first product, and the second fraction wherein the calcified egg shell particles have diameters in a range from 3 μ to 7 μ as a second product. separating an inner membrane component from a calcified outer shell component of the waste egg shells to produce therefrom an inner membrane fraction and a de-membraned calcified component; washing the de-membraned egg shell calcified components to remove any remaining membrane components; drying the washed de-membraned egg shell calcified components: dry-milling the dried de-membraned egg shell calcified components to produce small-diameter particles therefrom; separating the milled small-diameter egg shell calcified particles into three fractions wherein the first fraction consists of calcified particles having diameters of 3μ or less, the second fraction consists of calcified particles having diameters in a range from about 3 μ to about 7 μ, and the third fraction comprises calcified particles having diameters greater than 7 μ. dry-milling the third fraction and then separating additional quantities of the first fraction the second fraction, and if necessary, the third fraction. repeating the dry-milling step as many times as necessary to eliminate egg shell calcified particles having diameters greater than 7 μ; and separately collecting the first fraction wherein the calcified egg shell particles have diameters of 3 μ or less as a first product, and the second fraction wherein the calcified egg shell particles have diameters in a range from 3 μ to 7 μ as a second product. dry-milling the dried de-membraned egg shell calcified components to produce small-diameter particles therefrom; separating the milled small-diameter egg shell calcified particles into three fractions wherein the first fraction consists of calcified particles having diameters of 3μ or less, the second fraction consists of calcified particles having diameters in a range from about 3 μ to about 7 μ, and the third fraction comprises calcified particles having diameters greater than 7 μ. dry-milling the third fraction and then separating additional quantities of the first fraction the second fraction, and if necessary, the third fraction. repeating the dry-milling step as many times as necessary to eliminate egg shell calcified particles having diameters greater than 7 μ; and separately collecting the first fraction wherein the calcified egg shell particles have diameters of 3 μ or less as a first product, and the second fraction wherein the calcified egg shell particles have diameters in a range from 3 μ to 7 μ as a second product.