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Primadet EZTL


EZ™ Trunkline Delays (EZTL) are a type of Primadet® nonelectric delay detonator with delay times and hardware suited for trunklines in open pit mining, quarrying, construction, and underground mining. FOR USE IN ALL SURFACE BLASTING EZ™ Trunkline Delays (EZTL) are nonelectric blasting caps using shock tube as a lead. EZ™ Trunkline Delays are Primadet® nonelectric delay detonators whose lengths, delay times and hardware are suited for use as a trunkline in surface or underground blasting.

- Shock tube is a small diameter laminated plastic tube coated with a very thin layer or reactive material; only one pound of material per 100,000 feet of tube. When initiated, shock tube reliably transmits a low energy signal at approximately 6,500 feet per second from one point to antother. This shock wave phenomenon, which is similar to a dust explosion, will propagate trough most sharpe bends, knots and kinks in the tube. Th edetonation is sustained by such a small quantity of reactive material, the outer surface of the tube remains intact during and after functioning.

- A precise surface delay housed in a plastic connector. This surface connector will reliably initiate 1 to 6 properly connected shock tube(s) in both directions.

- A color coded delay tag which indicates the nominal firing time of the surface connector.

- The stop block is an inert fitting at the initiation end of the EZTL to prevent the tube from pulling trough the preceding surface connector. The surface connector and delay cap are attach to the output end of the EZTL and when used are connected to the blast hole desired to be initiated.

The opposite or initiation end of the EZTL has the Stop Block and is attached to the surface connector of the preceding blast hole. The direction EZTL’s are connected to the blast holes determines the sequence in which the blast holes will detonate. The choice of delay times determines the time interval between detonations.




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EZ™ Trunkline Delays (EZTL) are a type of Primadet® nonelectric delay detonator with delay times and hardware suited for trunklines in open pit mining, quarrying, construction, and underground mining. FOR USE IN ALL SURFACE BLASTING EZ™ Trunkline Delays (EZTL) are nonelectric blasting caps using shock tube as a lead. EZ™ Trunkline Delays are Primadet® nonelectric delay detonators whose lengths, delay times and hardware are suited for use as a trunkline in surface or underground blasting.

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