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IMPROVEMENTS IN BLASTING

■» A civil engineer writing to tbe Timed states that io aotneot the fiery uUa ia the neighborhood, of tf&rosely is performed where Water iJt^BL ie addition to gunpowder, W^^^H^ poesible rerults. The proce|fctf^^>naed ia the: following, 0 tue bore-hoie in i Q^f|d^^flP^ er cartridge, with luße esfe to i^e powder cartn^JHF inserted a tubecootaioiug waterijjjfce tube should be as large >s will admit, aad flfyflipWweaienfe length, the longer th^ptftter, Tbfey may be tnada of any TCbm^nieut cheap material, . thin tin--pU^a^r of stuoc brown paper turned roa&%>ri a wooden roller and pasted to<^l||gyflm^Li closed with corks , the bor^^^^^^J»uiped, the fuse lit, and the cw^^Hbmbl' 0 ttie ÜBUa ' manner. The resuJ^Hpraia operation may be briefly autnmWup. The powder, in exploding, burß%rf.he tube con* taioing tbe water jthcMidfebglorce ot the povdar is extendo^brough the water by the well-known grinciplea of hydraulics demonstrated years ago by Brumal), over tbe enlarged area of the bore-hole, due to the «pace occupied by the water-tube- A much larger quantity of coal is thereby brought down with a smaller quantity of ponder the beat given off by tha burning of tbe powder att^ tbe glass converts a portion of the vfcter into steam, the elastic forda of w%ich assists ia the operation of blasting ; the steam and water together pat out thefl;meand fl »sh of the powder, and absorb nnd neutralise tbe greater "portiou of the gases and smoke resulting from tbe explosion.

Permanent link to this item
Hononga pūmau ki tēnei tūemi

https://paperspast.natlib.govt.nz/newspapers/IT18801215.2.5

Bibliographic details
Ngā taipitopito pukapuka

Inangahua Times, Volume II, Issue II, 15 December 1880, Page 2

Word count
Tapeke kupu
238

IMPROVEMENTS IN BLASTING Inangahua Times, Volume II, Issue II, 15 December 1880, Page 2

IMPROVEMENTS IN BLASTING Inangahua Times, Volume II, Issue II, 15 December 1880, Page 2

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