In magazines especially constructed for the purpose. The barrels are generally placed near the sides, three tiers high, or four tiers if necessary; small skids should be placed on the floor and between the several tiers of barrels, in order to steady them, and chocks should be placed at intervals on the lower skid, to prevent the rolling of the barrels.
36. How are the different kinds of powder arranged?
Those barrels of the same kind, place and date of fabrication, and proof range, are piled together.
37. Should it be necessary to pile the barrels more than four tiers high, what is done?
The upper tiers are supported by a frame resting on the floor; or the barrels may be placed on their heads, with boards between the tiers.
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38. What is necessary for the preservation of the powder?
The magazine should be opened and aired in clear dry weather, and the ventilators should be kept free.
39. How may the moisture of a magazine be absorbed?
By chloride of lime suspended in a box under the arch, and renewed from time to time.