✦ LIBER ✦

Miners' Lamps.

Book ID: 109472280
Publisher: Nature Publishing Group
Year: 1922
Tongue: English
Weight: 119 KB
Volume: 109
Category: Article
ISSN: 0028-0836
DOI: 10.1038/109253a0

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📜 SIMILAR VOLUMES

Gauzes in miners' flame safety lamps

✍ L.C. Ilsley 📂 Article 📅 1921 🏛 Elsevier Science 🌐 English ⚖ 52 KB

Miners' Flame Safety Lamp Gauzes

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Comparative merits of the flame and elec

Comparative merits of the flame and electric safety lamps for miners

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Tests of miners' flame safety lamps in g

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✍ L.C. Ilsley 📂 Article 📅 1921 🏛 Elsevier Science 🌐 English ⚖ 57 KB

other reagents used, for the year I9I 9 . Some delay was experienced in collecting the data, but eventually returns were obtained from practically all the important plants. The results have been recently published in tabular form by the bureau. The amount of ores of all kinds treated by flotation w

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✍ R. Martin; R.A. Graveling 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 285 KB

The effects on the detection of objects moving in the peripheral field of adding ambient illumination (giving an illuminance of 5 lux) to that provided by a miner's cap lamp were examined in simulated underground conditions. The results indicated that an object moving into the visual field was detec