Made from premium natural sea salt with multiple trace minerals. We don't add any extra minerals to this block-Redmond's sea salt already naturally provides trace amounts of selenium, manganese, copper, iodine, zinc and more. This block works well for all classes of beef/dairy cattle, sheep, goats, pigs and horses. No Chemical Processing Redmond 10 Fine is unrefined and OMRI Listed. Our ratio is 93% sodium chloride and 0% synthetic chemicals. Whether your approach is organic or conventional, 10 Fine can help you get back to what you love about raising animals.