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2. Mechanical weed control - Wikipedia

   en.wikipedia.org/wiki/Mechanical_weed_control

   Mechanical weed control is a physical activity that inhibits unwanted plant growth. [1] Mechanical, or manual, weed control techniques manage weed populations through physical methods that remove, injure, kill, or make the growing conditions unfavorable. Some of these methods cause direct damage to the weeds through complete removal or causing ...

3. Propane torch - Wikipedia

   en.wikipedia.org/wiki/Propane_torch

   A propane torch is a tool normally used for the application of flame or heat which uses propane, a hydrocarbon gas, for its fuel and ambient air as its combustion medium. Propane is one of a group of by-products of the natural gas and petroleum industries known as liquefied petroleum gas (LPG). Propane and other fuel torches are most commonly ...

4. Blowtorch - Wikipedia

   en.wikipedia.org/wiki/Blowtorch

   The larger torches may have a heavy fuel reservoir placed on the ground, connected by a hose. This is common for butane- or propane-fuelled gas torches, but also applies to the older, large liquid paraffin (kerosene) torches such as the Wells light. Many torches use a hose-supplied gas feed, which can be mains gas when used in industrial settings.

5. Cannabis smoking - Wikipedia

   en.wikipedia.org/wiki/Cannabis_smoking

   Cannabis. Cannabis smoking (known colloquially as smoking weed or smoking pot) is the inhalation of smoke or vapor released by heating the flowers, leaves, or extracts of cannabis and releasing the main psychoactive chemical, Δ 9 - tetrahydrocannabinol (THC), which is absorbed into the bloodstream via the lungs.

6. Spots (cannabis) - Wikipedia

   en.wikipedia.org/wiki/Spots_(cannabis)

   Spots (cannabis) Spots (also known as spotting, knifers, knife hits, knife tokes, dots, hot knives, kitchen tracking blades, or bladers) refers to a method of smoking cannabis. [1] Small pieces of cannabis are rolled (or simply torn from a larger bud) to form the spot. The practice originated in the 1970s when drops or dabs of hashish oil were ...

7. Oxy-fuel welding and cutting - Wikipedia

   en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

   Oxy-propane torches are usually used for cutting up scrap to save money, as LPG is far cheaper joule for joule than acetylene, although propane does not produce acetylene's very neat cut profile. Propane also finds a place in production, for cutting very large sections. Oxy-acetylene can cut only low- to medium-carbon steels and wrought iron ...