 In the old time, they call it the Metallurgical Engineering Department, but now they call it Materials Engineering. And some of my work that I did, while I was at university, I prefer not to talk about them. Why not? The greatest thing that I did there was to, in the truth, use our Metallurgical Engineering Department to a material at Christmas time we call Purple Jesus, which is grape juice and alcohol. And we use the very pure alcohol, the 99 plus percent, which we need for for polishing metallurgical samples, so they will not stain. And that's what we use to spike our grape juice. Makes for quite a party. They would have a lay laid over steel and they would have an ingot to plunge into the molten steel to mix it up so they get a uniform bath of steel so that they can cast the steel with uniform properties from the start of casting to the end. And I said that is backwards, that is dangerous. So that's when I developed the porous plug and you will have a report of that, which I just gave you. And if you could explain it quickly in layman's terms, how would you explain it? What does it do? I said it's dangerous to get an ingot and plunge it like that. Wouldn't it be nice if we can use some gases in a porous brick and place in the bottom of a ladle and put gases through to stir the bath up? That would be a very good way of doing it. And that's how, as you will see in the report, how I developed the porous plug. Okay, so more of a from the bottom approach unless from the top. So I went to brick manufacturers and I said, I would like a porous brick and I said, not only porous but continuous porous so I can put some gas through under pressure. They showed me the doors and we want to make our bricks as dense as possible so they can last as long as possible. And then the government in the old days, they called it the Department of Mines, had a refractory lab there and I approached them and they said, well we'll help you to make a porous brick. And we were successful in developing a porous brick which was usable. And now it is used throughout the world. And changed the world of metallurgy. So you not only came up with the idea of finding a new technique but you also developed the actual brick. Developed the actual brick. You will read in that little report that I showed you. Okay, yeah, I know which I'll leave. And no one knew about that. So my wife said, you developed that 60 years ago. Why don't you tell the people how it came all about? And then that was the time I was sitting in the bathtub and I released some flatus, they call it a fart. That's the idea, that's how it came from.