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Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters). It might not be the moon, but Kittinger free fell from 102,800 feet in 1960 at the dawn of an infamous space race that captured the hearts of many. Baumgartner will attempt to break that record, a feat that boggles the mind. This is one of those monumental moments I will always remember, because there is no way I39。ll be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。m anxious for the next one: a space capsule hanging from a crane in the New Mexico desert. It39。ve still seen many important weather and space events, but right now, if you were sitting next to me, you39。s note: Judson Jones is a meteorologist, journalist and photographer. He has freelanced with CNN for four years, covering severe weather from tornadoes to typhoons. Follow him on Twitter: jnjonesjr (CNN) I will always wonder what it was like to huddle around a shortwave radio and through the crackling static from space hear the faint beeps of the world39。 專業(yè)好文檔 8 江西省德興市花橋鎮(zhèn)熱忱歡迎有識之士前來進行經(jīng)濟合作共圖發(fā)展。因此，企業(yè)經(jīng)濟效益較好。 技術(shù)經(jīng)濟。 恢復(fù)生產(chǎn)后，年產(chǎn)銅精礦含銅 480 噸，硫精礦 2900 噸，海綿銅（含銅量） 100－ 150噸。在今后生產(chǎn)中，入選礦石銅品位仍將大于 %。 礦山在歷年開采中，能做到貧富兼采，合理利用礦產(chǎn)資源。 本礦 區(qū)銅品位較富，有害雜質(zhì)少，礦石易采、易選、易煉，采用平隆溜井開拓，無底柱分段崩落法開采，采礦成本較低。以上采礦設(shè)備、土建設(shè)施、流動資金、井巷輔助工程維修等四項合計，共需資金 318萬元。 第五章：恢復(fù)生產(chǎn)需購置的設(shè)備、土建設(shè)施及資金 采礦坑口遭受泥石流危害，需購置部分設(shè)備恢復(fù)采礦設(shè)備和土建設(shè)施詳見表二、表三。 選礦廠設(shè)備停產(chǎn)至今完好無損，稍加維修即可投入正常生產(chǎn)。選銅泡沫產(chǎn)品采用濃縮、過濾兩段脫水流程，銅精礦含水率達 15%以下。 第四章：選礦 第一節(jié)：選礦工藝流程 該礦礦石硬度較低，普氏系數(shù)為 6－ 9，屬中硬低軟礦石，采用兩段一閉路破碎流程，一段磨礦，選別流程為先進銅后選硫的優(yōu)先浮選流程。三級礦量基本平衡。采用該采礦法，比采用常規(guī)溜礦法開采，勞動效率提高 70%，采礦成本下降 90%，取得較好經(jīng)濟效益。 第三節(jié)：采礦方法及采礦設(shè)備 為盡量節(jié)省切割工程量，提高采礦生產(chǎn)能力，最大限度地降低采礦成本，以及改善井下采場通風(fēng)作業(yè)條件，該礦采用無底柱分段崩落法采礦。采用平隆溜井方式開拓，沿 173m標高往 東開鑿一運輸大巷。平硐開拓系統(tǒng)井巷自流排水。礦區(qū)三面環(huán)山，峰巒連綿，僅一峽谷向南與外部溝通。） 根據(jù)圈定開采區(qū)段的地質(zhì)儲量和其他條件，礦山服務(wù)年限可達 14年，開采品位略高于地質(zhì)品位（勘探品位偏低）。 可選性試驗產(chǎn)品多元素分析結(jié)果表 表 1 精礦名稱 Cu（ %） Mo（ %） Au（ %） Ag（ %） S（ %） 銅鉬混合精礦