Detail Mining Safety: Bash for Help   Oleh:  The Economist Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 391 no. 8625 (Apr. 2009), page 77. Topik: Miners; Technology; Underground Collapse; Equipment Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.54 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel HIGH technology is not always needed to solve a problem. Indeed, a proposed new system for finding miners trapped by an underground collapse is activated simply by hammering on an iron plate with a sledgehammer. Rescuers can be not only alerted by the banging but also guided precisely to the scene. Sensitive listening equipment has long been used to try to hear people trapped underground. It is possible to detect seismic waves created by miners hitting rocks, say, but it can be difficult to distinguish these from other underground noises. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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