Rock salt is mined for:

Culinary use
Industrial purposes
De-icing roads
All of the above

Rock salt is mined for all of the above. It is used in culinary applications, such as adding flavor to food and preserving meat. It is also used in industrial purposes, such as water treatment and de-icing roads.

Culinary use: Rock salt is a common ingredient in many dishes, such as soups, stews, and sauces. It is also used to preserve meat by drawing out moisture and preventing the growth of bacteria.

Industrial purposes: Rock salt is used in a variety of industrial applications, such as water treatment, de-icing roads, and manufacturing. It is also used in the production of glass, paper, and other products.

De-icing roads: Rock salt is a common de-icing agent used to melt snow and ice on roads. It works by lowering the freezing point of water, which prevents the snow and ice from forming.

Rock salt is a versatile mineral with many uses. It is a valuable resource that is used in a variety of industries.