302 KANSAS CITY REVIEW OF SCIENCE. 



shipped to Pueblo, Kansas City, and other smelting centers more than 30,000- 

 tons of ore to date, this year. At an average of 10 per cent of lead in these 

 ores we have a grand total production of lead of 28,500 tons. How long this 

 production will be maintained, it is difficult to predict. It shows, however, 

 the important part Colorado, and particularly Leadville and its tributary camps, 

 occupy in the mining world, in the production of lead, at the present time. 



Little Pittsburg. — The official report for the week ended July 31st shows : 

 Ore shipped, 112 tons; settled for, 719 tons; balance shipped and unsettled for, 

 91 tons. During the month of July, 522 tons of ore were shipped and 719 tons 

 settled for. 



MONARCH district. 



From the Leadville Herald we take the following notes on this district : The 

 Madonna smelter is running very successfully, and turning out a car-load of bull- 

 ion daily. The smelter is using only the ore from the Monarch Company's 

 mines, which produces a moderate grade of bullion, but will increase the grade 

 by mixing in ore from the Monarch and other high-grade mines. It is the inten- 

 tion of General Tuttle, manager of the company, to increase the capacity of the 

 smelter by the addition of two fifty-ton stacks in the faU. The company's mines 

 are looking exceedingly well. The main drift, which has been run to connect 

 with the upper workings, shows ore all the way, and it is estimated that the 

 ore-reserves are sufficient to furnish the smelter with a two years' supply of ore. 



The Fairplay, located just above the Madonna smelter, has developed a body 

 of high-grade sulphuret ore, the extent of which has not been defined. The 

 Eclipse has during the past week caught ore in the tunnel which has been run to 

 tap the ore-body about 250 feet below the upper workings, and about fifteen tons 

 of ore have been taken out in driving the tunnel. The main shaft, now at a 

 depth of about 185 feet, also shows good ore in the bottom. The ore-bodies pre- 

 viously developed on the forty-five-foot level are still untouched. 



Several new and promising discoveries have been made on Limestone Moun- 

 tain, to the west of the Madonna group ; but as yet their extent is not definitely 

 known. The district generally shows considerable activity, and the indications 

 are, that it will assume a prominent place as a producer. 



MOSQUITO district. 



Sunny South. — Ore of remarkable richness has been discovered since the 

 recent reported strike. This property is developed by a tunnel which has been 

 run in on the lead for a distance of 70 feet. At 65 feet, an inch streak of ore 

 was cut, which rapidly widened, and on sinking on it for a depth of six feet, the 

 pay-streak increased to two feet of solid ore. During the sinking, twenty-eight 

 sacks of ore was taken out, which, on being tested at the London mine, the 

 native silver being thrown out, yielded returns of 385 ounces in silver and 20 per 

 cent in lead. 



