When using explosives, what are the specific precautions to be taken to prevent accidental discharges by extraneous electrical charges?
What will be an ideal response?
• In holes that have been primed and shunted, detonators should be short-circuited until they are connected into the blasting circuit.
• In the event of a lightning storm, blasting operations should be suspended and all personnel should be removed from the blasting area.
• Warning signs should be prominently displayed to warn against the use of radio transmitters within 1,000 feet of the blasting site.
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Horizontal-circle scales on a transit that are marked from 0 to 360 degrees are usually numbered each _____.
a. 5 degrees b. 10 degrees c. 45 degrees d. 60 degrees
What is the first big holiday of the year for the florist business?
What will be an ideal response?
What is a Boolean operation? Define two Boolean opera¬tions by sketching an example of each in isometric view
What will be an ideal response?
What is the primary design challenge for CO2 refrigeration systems?
A) The high refrigerant cost B) The high GWP of CO2 refrigerant C) CO2 refrigerant operates in a vacuum at low temperatures. D) The high operating pressures of CO2 refrigerant