Pounamu Pounamu Pounamu refers to several types of hard, durable and highly valued nephrite jade, bowenite, or serpentinite stone found in southern New Zealand. Pounamu is the Māori name. These rocks are also generically known as "greenstone" in New Zealand English. There are two systems for classifying pounamu. Geologically, the rock falls into the three categories named above, but Māori classify pounamu by appearance. The main classifications are "kawakawa", "kahurangi", "īnanga", and "tangiwai". The first three are nephrite jade, while "tangiwai" is a form of bowenite. In modern usage "pounamu" almost always refers to nephrite jade. Pounamu is generally found in
Use forms of explosives is usually sold in the form of a stick roughly eight inches (20 cm) long and one inch (2.5 cm) in diameter but other sizes also exist. Dynamite is considered a "high explosive", which means it detonates rather than deflagrates. The chief uses of dynamite used to be in construction, mining and demolition. However, newer explosives and techniques have replaced dynamite in many applications. Dynamite is still used, mainly as bottom charge or in underwater blasting. Use forms of explosives Explosive materials are produced in numerous physical forms for their use in mining, engineering, or military applications. The different physical