This 1958 historical photograph was provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH), and depicted a worker in Lompoc, California, handling bags of diatomaceous earth while wearing protective clothing. The image originally appeared in a U.S. Public Health Service Publication No. 601, in an article entitled,'Pneumoconiosis in Diatomite Mining and Processing', 1958. Inhaled dust or other airborne particulate materials containing silica that is deposited in the lungs, will cause the lung tissue to react by creating generalized nodular fibrotic changes, and is known as 'pneumoconiosis', which is also know an pneumosilicosis, or 'grinders' disease'.In gaining a better understanding of workplace hazards, protocol-formulating bodies such as NIOSH, are better able to create a safer workplace through substantiation of appropriate safety regulations.
The discovery of gold at Sutter's Mill set off the California gold rush of 1849. In this scene prospectors dig for gold with picks and shovels and pan for the precious metal. In the center three well-dressed men, possibly Sutter and two friends, carefully examine the contents of a prospector's pan. This was the last scene designed by Brumidi and painted by Costaggini. Architect of the capital.
This 1976 photograph depicts cattle that are standing in water at the edge of an irrigated pasture in California.
