Topaz – Uncyclopedia, the content-free encyclopedia

Topaz mining, on the other hand, is a lot like diamond mining, coal mining, tin mining, and the ancient and futile practice of mine mining, the process of extricating an entire mine (whether as a whole, or in pieces to be later assembled into a whole) from the inside of another mine entirely.

Mining in Pakistan – Wikipedia

Currently around 52 minerals, are mined and processed in Pakistan. Mining in Pakistan is a dangerous job, especially coal mining, as safety procedures are often neglected and accidents are quite common. Mining is an important industry in Pakistan.

ShopNBC Official – Gems en Vogue II 11.38ctw London Blue Topaz Trillon Drop Earrings

All stones permanently heat processed. Virtually all colorless Topaz mining occurs in Brazil, though these specimens are found in a host of other countries. Unlike man-made gems, treated colorless Topaz looks "real" because it is a natural gem that has just undergone a coloring process.

Blue Topaz Celtic Jewelry – Gemvara

Our precious metals are recycled or responsibly mined. Blue was once the rarest color of topaz, but today it is the most common thanks to a stable color-enhancement process involving irradiation and heat that was developed in the 1970s.

Wiktionary – Appendix:Dictionary of Mining, Mineral, and Related Terms/O/2 – Wiktionary

Dictionary of Mining, Mineral, and Related Terms/O/2. A process for separating the copper and nickel in the matte obtained by Bessemerizing. Also known as top-and-bottom process. Any of the depressants used in the flotation process.

Texas State Historical Association (TSHA) – MINERAL RESOURCES AND MINING – The Handbook of Texas Online – Texas State Historical Association (TSHA)

The production of lignite by strip-mining methods and the utilization of lignite to fuel mine-mouth generators for the production of electricity caused Texas to become a major coal (lignite) producer during the 1970s. MINERAL RESOURCES AND MINING.

Linda B's Blog – November Birthstones – Citrine & Topaz

Citrine is known to change color when subjected to heat and is routinely heated in the jewelry-making process to intensify its color. Most Citrine is mined in Brazil, but other sources of the quartz are Bolivia and Madagascar.

San Diego Natural History Museum – Your Nature Connection in Balboa Park – History of Mining …

In 1969 the Pala Stewart mine hit a new tourmaline adit and produced another ton of hot pink tourmaline before the mine sold in 1980. San Diego jeweler John W Ware owned and operated a small mine on Smith Mountain which produced the topaz.

US Uranium Mining and Exploration – US Nuclear Fuel Cycle Appendix 1

Most are mature operating mines with extensive underground workings, while the Topaz mine is relatively new. The Arizona 1 underground mine resumed production in 2009, with ore processed at White Mesa.

Topazery – Antique Jewelry FAQ's

The stone and ring may also be damaged during the setting process. Heat treatment completes a process that nature started.

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