. Intensive Landwirtschaft und Verwendung von Dynamit . mit einer Axt gemacht, mit dem Vorteil des Betreibers in einem sicheren Abstand, wenn der Stau beginnt. AUFBRECHEN *ROLLE WEGE vierzig Prozent, Dynamit kann zu großem Vorteil inbreaking up Rollwege von Protokollen verwendet werden, große Mengen dieser kraftvollen explosive wird jede Saison von den Holzfällern verwendet. Ein Fall dieses Sprengstoffs, der morgens aufgetaut wird, wird, wenn er mit einem alten Mantel oder einer Decke bedeckt und vor der Kälte geschützt ist, zu jeder Zeit während dieses Tages einsatzbereit sein. Die riesigen Stapel von Baumstämmen, gefroren und mit Schnee und Eis zusammen, können sofort mit einem gelockert werden

• Bildanbieter: Reading Room 2020 / Alamy Stock Foto
• Bild-ID: 2CRG2P1
• Dateigröße: 7,2 MB (583,9 KB Komprimierter Download)
• Freigaben (Releases): Model - nein | Eigentum - nein
• Format: 1199 x 2085 px | 20,3 x 35,3 cm | 8 x 13,9 inches | 150dpi

Weitere Informationen

Dieses Bild kann kleinere Mängel aufweisen, da es sich um ein historisches Bild oder ein Reportagebild handel

. Intensive farming and use of dynamite . done with an axe, with the advantageof the operator being at a safe distance when the jam starts. BREAKING UP *ROLL WAYS Forty per cent, dynamite can be used to great advantage inbreaking up rollways of logs, large quantities of this powerfulexplosive being used each season by the lumbermen. A case ofthis explosive, thawed in the morning, will, if covered by an oldcoat or blanket and protected from the cold, be ready for use atany time during that day. The huge piles of logs, frozen and boundtogether with snow and ice, can be instantly loosened with a littledynamite instead of prying them apart slowly and laboriously withcant hooks and levers. At a season when time is truly money, the dynamite used in this way saves many times its cost. The casesof dynamite can be transported easily and safely if properlyhandled. No logging camp can afford to be without it a single daywhen engaged in this work. 82 EXPLOSIVES ANDBLASTING SUPPLIES HOW TO HANDLE, STOREAND USE THEM BLASTING BY ELECTRICITY. PRINCIPLE OF EXPLOSIVES BLASTING Explosives are divided into two general classes, known as high explosives and low explosives; dynamite andlow powder are examples of the former, and blasting powderof the latter. They are solids, having bound up in themselves verypowerful energy, which, when properly directed, can be made todo an enormous amount of valuable work. To get them to do thiswork economically, they must be closely confined in the midst ofthe material which is to be broken or thrown out, and then exploded;that is, instantly changed from a small volume of a solid to a verjlarge volume of a gas. Low explosives (blasting powder) will dobut little, if any work, if not tightly confined or corked up whenexploded, but high explosives change from a solid to a gas soquickly that they will jar and break material on which they arelying when they explode, even though they are confined very little, as in **mudcapping or blistering boulders, or if not

Stockbilder mithilfe von Tags suchen

• bo
• bookcentury1900
• bookdecade1910
• bookidintensivefarming00penn