On average, a woman has her period from three to seven days and the average woman menstruates from age 13 until age 51. That means the average woman endures some 456 total periods over 38 years, or roughly 2,280 days with her period -- 6.25 years of her life. Midol. You can only take up to six caplets a day, and cramps usually persist for two days. There are 40 caplets per package of Midol, which costs $8.99 at Walgreens. 12 caplets x 456 periods = 5,472 caplets. At 40 caplets per container, that's 136.8 Midol purchases x $8.99 = $1,229.83.
The most successful copper heap leaching operations have been those processing copper oxides and secondary copper sulphides (Table 1). Chalcocite (Cu2S) is the main copper sulphide mineral mined at bioleaching operations. Some of the chalcocite heap operations began as oxide (chemical) leach operations and were converted to bioleach (oxidative) operations by heap aeration and/or inoculation, when the oxidised ore was depleted.
Most important group of ore minerals.Ex: PYRITE(fool's gold), GALENA (lead ore) and MO state mineral SPHALARITE (zinc ore) used to make galvanized steel, smells like rotten eggs CHALCOPYRITE (copper and iron ore).