Marlene Gasdia-Cochrane reports that In case you were not one of our regular readers in those years, here are some of our most popular articles:
1. Pyrite: The Real Story Behind Fools Gold... While pyrite has a brass-yellow color and metallic luster similar to gold, pyrite is brittle and will break rather than bend as gold does. Gold leaves a yellow streak, while pyrite streak is brownish black.
2. Industrial Diamonds, As Good as Gemstones, or Better? Diamond is the hardest substance on earth and has the highest thermal conductivity of any material at room temperature, qualities needed for numerous industrial purposes. Diamond is used as an abrasive in grinding, drilling, cutting, and polishing, and has proven to be more cost-effective compared to other abrasives in many industrial processes because it cuts faster and lasts longer.
3. Determining the Origin and Authenticity of Gemstones using EDXRF ... Mining for precious colored gemstones is rigorous and time-consuming because the deposits are few and when found, tend to be characterized by small quantities of gems scattered throughout a large amount of rock. Modern mining techniques are of little value in these circumstances, and the deposits are often too small to be profitable for major mine outfits, who leave them to small, independent miners who rely on the same manual techniques they have been using for decades. Nevertheless, in recent years, several major mining companies have entered the gemstone market with new strategies for employing modern mining practice.
4. Increasing Clinker Quality through Automation... Clinker quality depends on raw material composition. If the raw materials are inappropriate, or if they are blended improperly, buildings and roads made from the concrete will have poor strength and durability. Examples can be found in countries such as China and Qatar where construction projects were suspended when it was discovered that low-quality concrete had been made.
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