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What3Words provides a precise and incredibly simple way to talk about location, by dividing the world into a grid of 3m x 3m squares and assigning each one a unique 3 word address (external link).
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Prevention video, produced by La Chamoniarde (Society for prevention and mountain rescue) in Chamonix, France (external links).
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EASA is an Agency of the European Union with Responsibility for Civil Aviation Safety (external links).
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The Federal Aviation Administration is an operating mode of the US Department of Transportation (external link).
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Why Tracking is still a valuable Art and Science, by Hull'sTracking School, USA & Europe (external links).
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ACA serves the canyoneering community through excellence in education, including training and certification for canyon leaders, professional canyon guides and rescue team members (external link).
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Promotes the exchange of knowledge and experience in the field of cave rescue (external links).
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Elsevier is a global information analytics business that helps institutions and professionals advance healthcare, open science and improve performance for the benefit of humanity (external link).
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Web-based free online translator (external link).
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WeTransfer is a simple way to send around large files up to 2 GB. Founded in 2009, based in the Netherlands and in the USA (external link).
