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2. HAZMAT Class 6 Toxic and infectious substances - Wikipedia

   en.wikipedia.org/wiki/HAZMAT_Class_6_Toxic_and...

   Class 6.1: Poison. Hazardous Materials. Class 6.2: Biohazard. Hazardous Materials. Class 6: Packing Group III. Hazardous Materials. Class 6: Toxic. Poison: 454 kg (1001 lb) or more gross weight of poisonous materials that are not in Hazard Zone A or B (see Assignment of packing groups and hazard zones below). For U.S. Domestic Use only.

3. Iowa-class battleship - Wikipedia

   en.wikipedia.org/wiki/Iowa-class_battleship

   The Iowa class was a class of six fast battleships ordered by the United States Navy in 1939 and 1940. They were initially intended to intercept fast capital ships such as the Japanese Kongō class and serve as the "fast wing" of the U.S. battle line. [ 3][ 4] The Iowa class was designed to meet the Second London Naval Treaty 's "escalator ...

4. History of water supply and sanitation - Wikipedia

   en.wikipedia.org/wiki/History_of_water_supply...

   The history of water supply and sanitation is one of a logistical challenge to provide clean water and sanitation systems since the dawn of civilization. Where water resources, infrastructure or sanitation systems were insufficient, diseases spread and people fell sick or died prematurely. Astronaut Jack Lousma taking a shower in space, 1974.

5. Sustainable Development Goal 6 - Wikipedia

   en.wikipedia.org/wiki/Sustainable_Development_Goal_6

   Sustainable Development Goal 6 ( SDG 6 or Global Goal 6) declares the importance of achieving "clean water and sanitation for all". It is one of the 17 Sustainable Development Goals established by the United Nations General Assembly to succeed the former Millennium Development Goals (MDGs). According to the United Nations, the overall goal is ...

6. Water storage - Wikipedia

   en.wikipedia.org/wiki/Water_storage

   Water storage. Water storage is a broad term referring to storage of both potable water for consumption, and non potable water for use in agriculture. In both developing countries and some developed countries found in tropical climates, there is a need to store potable drinking water during the dry season. In agriculture water storage, water is ...

7. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water that is fit for specific purposes. Most water is purified and disinfected for human consumption ( drinking water ), but water purification may also be carried out for a variety of ...

8. Dreadnought-class submarine - Wikipedia

   en.wikipedia.org/wiki/Dreadnought-class_submarine

   The Dreadnought class is the future replacement for the Royal Navy 's Vanguard class of ballistic missile submarines. [ 1] Like their predecessors they will carry Trident II D-5 missiles. [ 4] The Vanguard submarines entered service in the United Kingdom in the 1990s with an intended service life of 25 years. [ 5]

9. America-class amphibious assault ship - Wikipedia

   en.wikipedia.org/wiki/America-class_amphibious...

   The America class (formerly the LHA(R) class) is a ship class of landing helicopter assault (LHA) type amphibious assault ships for the United States Navy (USN). The class is designed to put ashore a Marine Expeditionary Unit using helicopters and MV-22B Osprey V/STOL transport aircraft, supported by AV-8B Harrier II or F-35 Lightning II V/STOL aircraft and various attack helicopters.