This was a Feasibility Study for a Midwest Conservation Effort , also called A Regional Study for Materials Conservation in Indiana, Kentucky, Michigan, Ohio, Pennsylvania, West Virginia. Equipment and expertise currently exist in the region. The number one need was a method or procedure for motivating decision-makers to take action for conservation. The passage is reproduced below. A third of all printing and writing paper is coated.
Kaolin is used to give paper a glossy coating and for filling paper.
It is important, of course, for the reproduction of illustrations. English China Clays, during the 1960s, helped paper manufacturers develop a considerably cheaper coating process using calcium carbonates, such as chalk, limestone or marble. The process involves using an alkaline rather than an acid sizing. Now that the cheaper process is being more widely used, English China Clays is fighting for a share of the market. The popularity of using calcium carbonate coatings is quite recent.