The Golden Era Mining Company developed the Golden Era group of claims that border the Easter Sunday Mine.  Work on the property occurred after gold discovery at the Easter Sunday mine.  In June 1902, ore running $160 of gold per ton was reported. During the following month a specimen of float was discovered and was described as assaying the enormous sum of $5,911.60 gold per ton. A shaft was started and sunk to 130ft. with drifting on the 100ft. level. In 1903 the company wanted to install a mill of ten stamps. These thoughts quickly faded and by October 1903 the property was idle. The Golden Era # 8 claim is a source of green fluorite. It is found in surface outcroppings coated with a thick layer of weathered calcite. Although, fluorite is a common mineral worldwide, in Bisbee it is comparatively rare. Interestingly, J. McDonald Bryce, part owner of the Bryce Brothers Company, a glassworks was a major investor .This successful and still operational glassworks produce pressed glass in a variety of colors and patterns as well as blown glass.