Rain guns

A single slurry application should not exceed 50000 litres/ha. At least a three-week interval should be allowed between applications. Slurry should not be applied during the closed period . When applying slurry through irrigation lines, the precipitation should not exceed 5 mm/hour. Rain guns should be avoided. 

Rain guns. These ate now the most widely nsed machines. They are nsed on all types of crops. The droplets are large and the diameter of area covered rrray be between 60 and 120 m. Some types are nsed for irrigation of slurry or dirty water. 

Surface trickle. Water is applied through small bore perforated pipes on or near to the soil surface. They give a much more efficient use of water than sprinklers or rain guns and are often used in pereimial horticultural crops or vineyards. 

The first intimation Cockren had that he had been successful was a violent hissing. Jets of vapor poured from the retort and into the receiver "like sharp bursts from a machine gun." Then there was a violent explosion and "a veiy potent and subtle odor filled the laboratory and its surroundings." A friend of Cockren s described this odor as resembling "the dry earth on a June morning, with the hint of growing flowers in the air, the breath of wind over heather and hill, and the sweet smell of rain on the parched earth."... 

The mastic type sealants include hand-applied systems based on linseed oil (putty), gun-applied oil-based systems, using one or more drying oils and gun-applied butyl systems based generally on liquid polyisobutylene (PIB) with oils and solvents. These function primarily as gap fillers to prevent the ingress of dust, rain and wind in substantially non-moving joints. ... 

RUSSIAN CIVIL WAR. Civil war raged across the former Russian Empire from 1918 until at least 1921. As with many civil wars, this conflict witnessed various savageries. On several occasions, the Bolshevik-led Red Army threatened use of chemical weapons (CW) against civilians. For instance, in July 1918, the Bolshevik Extraordinary Staff of the Yaroslavl Front issued a written threat Our heavy guns will rain the most pitiless hurricane fire of heavy explosives and chemical shells upon the city [of Yaroslavl]. All who have not fled will perish. An attack two days later destroyed this city north of Moscow, hut the use of CW in that attack is unconfirmed. 

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