brett said if a new federal government decided to withdraw the workforce supplement funding after the first year dpg had agreed to fund a 3 % increase in the second and third years of the agreement
Pure helium is a medium that allows sound to pass through it more quickly than air, so it makes your voice sound higher pitched (the mechanics are similar to speeding up a video and hearing the sound pitch up). Some gases will do the opposite; most commonly, sulfur hexaflouride, which slows down sound waves.
Alcohol does not produce perceptible damage to your signing voice on a one time use basis. However, if you drink alcohol just before singing it does strip away the proper lubrication around your vocal cords, causing very small abrasions that (over time) will cause scaring which will make your voice to sound raspy.