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Triad is a term that is used to denote many branches of an underground societies and organizations based in China, Mexico and Hong Kong among others places. From local street gangs to large groups and sophisticated criminal gangs and mafia groups there is...

Metal detectors and headphones go hand in hand. All metal detectors produce audio signals while passing over metal targets. The signals can range from faint noises to something quite loud at times. Success in metal detecting depends on how well an individ...