favoring offshore waters and thus seldom encountered by humans, the cookiecutter shark is not considered dangerous because of its small size. however, it has been implicated in a few attacks; in one case, a school of 30-cm 12 in long fish with blunt snouts attacked an underwater photographer on an open-ocean dive.
plastic metal was a type of vehicle armour originally developed for merchant ships by the british admiralty in 1940. the original composition was described as 50% clean granite of half-inch size, 43% of limestone mineral, and 7% of bitumen.it was typically applied in a layer two inches thick and backed by half an inch of steel.. plastic armour was highly effective at stopping armour piercing .
hammer mills. hammer mills or 'crusher driers' swept with hot kiln exhaust gases have limited application where a soft, wet seven trust material is being ground. the simple design means that it can be operated at a higher temperature than other mills, giving it high drying capacity.
a jackhammer operates by driving an internal hammer up and down. the hammer is first driven down to strike the back and then back up to return the hammer to the original position to repeat the cycle. the effectiveness of the jackhammer is dependent on how much force is applied to the tool. it is generally used like a hammer to break the hard .
tomica hero: rescue force トミカヒーロー レスキューフォース, tomika hīrō resukyū fōsu is a japanese tokusatsu television series that began airing april 5, 2008, on tv aichi.it is the first tomica hero series based on takara tomy's tomica toy car line. the characters use tomica's super tools スーパーツール, sūpā tsūru and super vehicles スーパー .
kentish ragstone is a hard grey limestone in kent, england, dn from the geological formation known as the hythe beds of the lower greensand. for centuries it has been quarried for use both locally and farther afield.