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1994年圣诞假期，20岁左右的南非年轻潜水员迪昂·德雷尔受南非洞穴潜水协会潜水员之邀，到布须曼洞担任支援潜水员。
原文引用 2 处
「Deon had logged about 200 dives when he was invited to join some South Africa Cave Diving Association divers at Bushman’s Hole over the 1994 Christmas break.」
Outside · 2005-08-01
「was invited by the South African Cave Diving Association to join them as a support diver at Bushman's Hole」
ABC News · 2007-03-19
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1994年12月17日，迪昂·德雷尔在一次练习潜水的上升途中被发现落在队伍下方，并迅速沉入深处，未能救回。
原文引用 2 处
「on December 17, 1994, the hole claimed Deon Dreyer」
Outside · 2005-08-01
「The dive team reported that while coming back up they looked down and saw Deon Dryer's cave light fading, sinking back into the abyss.」
ABC News · 2007-03-19
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推测迪昂·德雷尔的死因是深水中二氧化碳积聚导致昏迷，真实原因无人确知。
原文引用 2 处
「No one knows for sure what killed Deon. The best guess is deep-water blackout from carbon dioxide buildup.」
Outside · 2005-08-01
「carbon dioxide can build up in the lungs, resulting in a blackout」
ABC News · 2007-03-19
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事后有遥控潜水器下洞搜寻，只在洞底找到迪昂·德雷尔的潜水头盔，没有发现遗体。
原文引用 2 处
「It found Deon’s dive helmet on the vast floor of Bushman’s, but there was no sign of his body.」
Outside · 2005-08-01
「I mean, there was no body.」
ABC News · 2007-03-19
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据Outside，1996年南非潜水员努诺·戈梅斯用开路式装备下到布须曼洞洞底，约927英尺，曾被称为世界纪录。
原文引用 1 处
「had claimed a world record in 1996 when he hit bottom, on open-circuit gear, at 927 feet」
Outside · 2005-08-01
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据Outside，肖使用闭路循环呼吸器，2004年6月在布须曼洞用改装的Mk15.5呼吸器下潜到约725英尺，创洞穴闭路呼吸器深度纪录。
原文引用 1 处
「Shaw turned up with his modified Mk15.5 and dived it to 725 feet, another world record for a closed-circuit rebreather in a cave.」
Outside · 2005-08-01
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2004年10月28日，肖下潜到洞底附近探索，在约270米处发现一具遗体，认出是十年前失踪的迪昂·德雷尔。
原文引用 3 处
「Shaw knew immediately who it was: Deon Dreyer, a 20-year-old South African who had blacked out deep in Bushman’s ten years earlier and disappeared.」
Outside · 2005-08-01
「Shaw found Dreyer's remains at a depth of almost 270m」
ScubaBoard · 2005-01-08
「he found a body that had been there for nearly ten years, 20-year-old diver Deon Dreyer」
InDEPTH · 2023-05-31
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各来源对肖10月那次下潜的最大深度说法不一：约270米（886英尺）、约280米，或876英尺（约267米）。
不同来源给出的深度与单位换算不同
原文引用 3 处
「his VR3 dive computer said he was now approaching 886 feet」
Outside · 2005-08-01
「Dave dove to 280 meters, touched the bottom and started exploring.」
InDEPTH · 2023-05-31
「At 876 feet, Shaw reached the cave floor」
ABC News · 2007-03-19
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肖当时试图把遗体抬起，但遗体连同气瓶似乎陷在泥里，他便系上线绳标记位置后开始上升。
原文引用 2 处
「Shaw quickly tied the cave reel to Deon’s tanks, so the body could be found again」
Outside · 2005-08-01
「Unable to pry the body from the silt, Shaw marked its location with a feeder line」
ABC News · 2007-03-19
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据Outside，肖在上升途中用写字板向唐·雪莉告知“270米，发现遗体”，雪莉随后与他握手。
原文引用 1 处
「Shaw showed him an underwater slate on which he had written 270m, found body」
Outside · 2005-08-01
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2004年10月30日，肖致电迪昂的父亲，表示愿意把他的儿子带回来，家属同意了。
原文引用 2 处
「I will go and fetch your son」
Outside · 2005-08-01
「But then, yes, we went for the recovery.」
ABC News · 2007-03-19
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肖和雪莉制定了需要多名潜水员分层接力的复杂方案，肖还与妻子设计了一只带抽绳的丝质裹尸袋，以防遗体在上升途中散开。
原文引用 2 处
「Shaw and Shirley developed a complex dive plan that would require as many as nine different divers working at varying depths.」
ABC News · 2007-03-19
「Together with Ann, he designed a silk bag with drawstrings, long enough to fit over Deon’s fins.」
Outside · 2005-08-01
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雪莉后来留有永久性平衡障碍。
原文引用 2 处
「the helium bend left him with permanent damage that has impaired his balance」
Outside · 2005-08-01
「Don Shirley nearly died as well, and apparently was left with permanent damage that has impaired his balance」
InDEPTH · 2023-05-31
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据Outside，雪莉计划在水中预置35个备用气瓶，警方还运来了一个加压舱。
原文引用 2 处
「He planned to have 35 backup cylinders of gas in the water」
Outside · 2005-08-01
「a recompression chamber that the police trucked in」
Outside · 2005-08-01
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为拍摄纪录片，肖头盔上装了摄影机，据报道这台摄影机是新设计的、未经实战检验。
原文引用 2 处
「Shaw's helmet camera -- designed by Hiles -- was new and untried.」
ABC News · 2007-03-19
「attached it to a Petzl climbing helmet」
Outside · 2005-08-01
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据Outside，由于头盔装了摄影机，肖原本习惯挂在颈上的潜水灯无法再那样携带，他告诉摄影师有时会把灯放在身侧。
原文引用 1 处
「He told Hiles that, instead of slinging his light around his neck, he would occasionally set it out to the side.」
Outside · 2005-08-01
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据IOL，录像交由专家审查，以判断肖究竟出了什么问题。
原文引用 1 处
「the footage will be reviewed by various experts to try and determine exactly what is going on」
IOL · 2005-01-13
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计划在2005年1月8日执行：肖下到约270米处把遗体装袋，约五分钟后上升，在220米处把遗体交给等候的雪莉。
原文引用 2 处
「The dive would go off on the coming Saturday, January 8」
Outside · 2005-08-01
「Shaw would have had five minutes to do this before coming up to meet his back-up, Don Shirley, who was waiting for him at 220m.」
IOL · 2005-01-13
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2005年1月8日清晨六点多，肖带着头盔摄影机入水，开始这次约12小时的计划潜水。
原文引用 2 处
「ducked into the dark waters of Bushman’s Hole」
Outside · 2005-08-01
「Shaw entering the water at 6:14am on Saturday」
IOL · 2005-01-13
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据Outside，肖用了11分钟多一点就到达洞底，比计划快约一分半钟，随即沿线绳走向遗体并取出裹尸袋。
原文引用 1 处
「He hit the bottom in just over 11 minutes」
Outside · 2005-08-01
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遗体与预想不同：它已不再陷在泥里，而是处于漂浮滚动的状态，使装袋变得更难，团队事前未设想过这种情形。
其中有低可信度来源
原文引用 2 处
「The body was not meant to be floating.」
Outside · 2005-08-01
「That substance has positive buoyancy, and that made Deon's body float」
Dive-Scuba ·
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录像显示，肖的潜水灯和线绳缠在一起，他试图理顺，但被遗体连着的线绳拖住，无法前进。
原文引用 2 处
「His errant cave light has apparently snagged the cave line tied to Deon’s tanks.」
Outside · 2005-08-01
「he got entangled in the cave line」
IOL · 2005-01-13
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肖的呼吸在录像中越来越急促，有人推测这是在高压、用力和氮醉下二氧化碳积聚，最终失去意识；据信其死因是呼吸衰竭。
原文引用 2 处
「Dave Shaw, with carbon dioxide suffusing his lungs, is starting to pass out.」
Outside · 2005-08-01
「The physical effort of trying to free himself led to his death for what is believed to be respiratory insufficiency」
InDEPTH · 2023-05-31
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关于肖失去动静的时间，说法不一：Outside称潜水约21分钟时声音开始减弱，IOL称约26分钟时动作和呼吸停止。
两家引用的时间点不同，可能是对录像的不同解读
原文引用 2 处
「Twenty-one minutes into the dive, the sounds finally start to fade.」
Outside · 2005-08-01
「But then exactly 26 minutes into the dive all activity stops and then his breathing as well.」
IOL · 2005-01-13
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雪莉下潜到约500英尺时发现下方肖的灯一动不动，没有气泡上升，判断出了大问题，便继续下潜查看。
其中有低可信度来源
原文引用 2 处
「There was only one problem: The light wasn’t moving.」
Outside · 2005-08-01
「Shirley descended to 250m to look for him」
ScubaBoard · 2005-01-08
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据Outside，雪莉下到约800英尺时，手臂上的控制器被压力压坏，他不得不放弃继续下潜，转而上升。
原文引用 1 处
「At about 800 feet, deeper than he had ever been, Shirley heard the slight, sharp crack of enormous pressure crushing something」
Outside · 2005-08-01
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雪莉在写字板上写下“DAVE NOT COMING BACK”（戴夫不会回来了），经由上升的潜水员和滑绳传到水面。
其中有低可信度来源
原文引用 2 处
「It read, DAVE NOT COMING BACK.」
Outside · 2005-08-01
「He communicated to the surface through messages written on slates passed up a rope that Shaw's light had disappeared.」
ScubaBoard · 2005-01-08
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水面总指挥宣布启动应急方案，警方称肖几乎不可能生还。
其中有低可信度来源
原文引用 2 处
「we are on our emergency plan」
Outside · 2005-08-01
「there was little chance of an Australian diver returning from the depths of the world's third deepest freshwater cave」
ScubaBoard · 2005-01-08
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据Outside，雪莉上升途中内耳形成氦气泡，出现严重眩晕和呕吐，在水中减压约12个半小时后被送入加压舱。
原文引用 2 处
「a small bubble of helium had formed in his left inner ear, causing extreme vertigo」
Outside · 2005-08-01
「He had been in Bushman’s Hole almost 12 and a half hours.」
Outside · 2005-08-01
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2005年1月12日，肖与迪昂的遗体在洞内约20米深处被发现，并随后一起被带出水面，头盔摄影机也被找回。
原文引用 3 处
「The bodies were found at a depth of 20m in the freshwater cave.」
IOL · 2005-01-13
「The remains of 20-year-old Deon Dreyer and of Shaw were brought to the surface on Wednesday - with the camera.」
IOL · 2005-01-13
「We saw Deon and Dave stuck in the cave at 20 meters.」
Outside · 2005-08-01
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据报道，两具遗体是在潜水员回收洞内残留的气瓶和线绳时，随绳被一起带离洞底而上升的。
原文引用 2 处
「it had pulled the cave line—and with it Deon and Shaw—off the bottom」
Outside · 2005-08-01
「They were dislodged during the bid by Herbst and Petrus Roux, assisted by police divers, to recover the dive tanks attached to the shot line」
IOL · 2005-01-13
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据IOL，潜水员赫布斯特看过录像后认为，肖似乎用力过度，随后缠在线绳上脱不了身。
原文引用 1 处
「it appears that Dave was working too hard」
IOL · 2005-01-13
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据IOL，雪莉评价肖“死得高贵，如果死亡有高贵可言的话”，称他已尽了全力。
原文引用 1 处
「He died a noble death, if there is such a thing. He tried his best.」
IOL · 2005-01-13
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据Scubaverse，这起事件后来被菲利普·芬奇写进《Raising the Dead》一书（2008年出版）。
原文引用 1 处
「Raising the Dead, by Phillip Finch」
Scubaverse ·
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布须曼洞（Boesmansgat）是南非北开普省的一处竖井状淡水溶洞，被称为已知第三深的淡水洞穴。
原文引用 2 处
「a remote sinkhole in the Northern Cape province of South Africa and the third-deepest freshwater cave known to man」
Outside · 2005-08-01
「a deep, submerged freshwater cave (or sinkhole) in the Northern Cape province of South Africa」
InDEPTH · 2023-05-31
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洞口海拔约1500至1600米，高海拔使同样深度的潜水需要更长的减压时间。
其中有低可信度来源
原文引用 2 处
「at 1,600 meters (nearly 5,000 feet) altitude」
InDEPTH · 2023-05-31
「This means that the reduction of surface pressure creates a greater inert gas gradient and creates the necessity for longer decompression times.」
Dive-Scuba ·
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戴夫·肖是澳大利亚人，50岁，国泰航空飞行员，常驻香港，是洞穴潜水探索者。
原文引用 2 处
「Shaw, a Cathay Pacific Airways pilot based in Hong Kong」
Outside · 2005-08-01
「a 50-year-old Australian pilot and ace cave diver」
IOL · 2005-01-13
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据Outside，唐·雪莉是48岁的英国人，在南非经营技术潜水学校，是肖的亲密朋友和搭档。
原文引用 1 处
「Don Shirley, a 48-year-old British expat who runs a technical-diving school in Badplaas, South Africa」
Outside · 2005-08-01
归途路全球户外事故地图档案
