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2. Ten-code - Wikipedia

   en.wikipedia.org/wiki/Ten-code

   Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [1]

3. Oxygen-free copper - Wikipedia

   en.wikipedia.org/wiki/Oxygen-free_copper

   Oxygen-free copper ( OFC) or oxygen-free high thermal conductivity ( OFHC) copper is a group of wrought high-conductivity copper alloys that have been electrolytically refined to reduce the level of oxygen to 0.001% or below. [1] [2] Oxygen-free copper is a premium grade of copper that has a high level of conductivity and is virtually free from ...

4. Copper extraction - Wikipedia

   en.wikipedia.org/wiki/Copper_extraction

   Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper ores consists of a series of physical, chemical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. [1]

5. Copper - Wikipedia

   en.wikipedia.org/wiki/Copper

   Copper is the 25th most abundant element in Earth's crust, representing 50 ppm compared with 75 ppm for zinc, and 14 ppm for lead. Typical background concentrations of copper do not exceed 1 ng/m 3 in the atmosphere; 150 mg/kg in soil; 30 mg/kg in vegetation; 2 μg/L in freshwater and 0.5 μg/L in seawater.

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. US Supreme Court rejects teen sex abuse victim's bid to ... - AOL

   www.aol.com/news/us-supreme-court-rejects-teen...

   July 2, 2024 at 2:24 PM. By John Kruzel. WASHINGTON (Reuters) -The U.S. Supreme Court declined on Tuesday to hear a Texas teen's bid to revive his lawsuit accusing Snapchat owner Snap of failing ...