I'd like to talk about these air shafts a little bit more, so excuse me if I go on too much.
Now, regarding these shafts, we should all be of the understanding that they were planned and laid out during the original construction of the pyramid. Imagine the architectural mind, effort, and arduous labor involved to include these 8"x8" channels in four separate locations. With that in mind, would those who built these channels as "air shafts" feel the need to block the end of them, thereby nullifying their actual intended purpose completely? Specifically, the two from the queen's chamber come to a dead end way before they reach the open air. See below:
Before I go further, I'd like to add one little known fact - and that's that none of these shafts are straight. All four of them bend, sometimes multiple times. My source for this is Gantenbrink - the gentleman involved in the first robotic exploration of the shafts back in the 90's. To me, the fact that these shafts bend also eliminates the idea of them being "star shafts", or intentionally pointing to any specific star or constellation. If the pharaoh's soul was intended to go directly to the heavens, then there's just no way the architect's would intentionally deviate from that course. They didn't have to move around any obstacles, they deviated intentionally. See below for a few more pictures showing the shape and construction. If they were channels for the pharaoh's soul to travel to the afterlife, then why would the shafts in the queen's chamber end before penetrating the queen's chamber itself? That's another little known fact. Both of these air shafts actually stopped 8 cm short of entering the queen's chamber. See the graphic below.
The last item I'd like to bring up is that of the obstacles that block the shafts in the queens chamber. Please see below:
Take a good long look at those blocks and their copper fittings (the first is the northern block,the second is the southern). I'm an electrical contractor by trade, so I'd like to say I have a pretty firm understanding of the importance and natural properties of copper in relation to electricity. In my mind, based on the intentional depth, length, construction, and obstruction at the end of these shafts, there can be little doubt that they were intended for anything other than that of a conductor of some sort. What kind? That's impossible for me to say, but if I had to throw my weight in one corner, I'd lean to that of a type of conductor that enables the creation of a vibration or an oscillation, rather than the sole purpose of an electrical current. In terms of physics, and according to dictionary.com, an oscillation is as follows:an effect expressible as a quantity that repeatedly and regularly fluctuates above and below some mean value, as the pressure of a sound wave or the voltage of an alternating current.
Interesting, isn't it? The mind races for explanation and conclusion, but I think that's the best part. Drawing your own. What could it be or mean? I certainly don't have the answers, I'm an average Joe that has an opinion or idea, much like all of you who read this. Funny as it may sound, I think that's the best part about being human. The ability to think, imagine, and create. Please take the above, consider all possible angles, draw your own conclusion, and pursue as you will (and also see below for more artistic renderings of the shaft composure - as digitally reconstructed by Gantenbrink).