We need to look at what is management and how it has changed. What was once considered good practice in farming in some areas is no longer considered good practice because you are losing soil. The same thing is happening in ranching and as we look at the way range management has changed in the last 30 years, it is really dramatic in what the goals and objectives are of those people that are on the land is to stay on the land.

Pima County is endowed with many mineral resources, not only copper mines, but also the important products such as sand, gravel, and limestone used everyday in supporting the infrastructure of our cities. It is essential that these mineral resources, and the lands where they occur, remain available for exploration and development. This report presents an assessment of the mineral resources of Pima County based on hard data derived from many experienced geologists working in the private sector and from publications of state and federal government agencies.