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"Urban mining" was recently introduced to explain a particular concept. Let's take the example of gold. Gold is present in nature, and on average, the concentration of gold is about 0.5 grams of gold for every ton of material. So, if you go to your garden and start digging, after making a large hole and digging up a ton of material, you'll have a chance of finding half a gram of gold. That's the average concentration on Earth. Of course, in some places gold is more concentrated, like in gold mines. So, there, you dig up a ton of material and you might find five or six grams of gold. Now, if you look at how much gold you have in a single cell phone, obviously it's not much. But in a ton of cell phones, there are usually about 350 grams of gold. That's 80 times greater than the concentration you have in gold mines. That's why we call it "urban mining." We say it's much more efficient to extract gold from electronic waste. It's much more concentrated. 🌟 SUBSCRIBE TO THE CHANNEL AND TURN ON NOTIFICATIONS (🔔) THIS WAY YOU SUPPORT OUR WORK, THANK YOU ✅ PIX in support of our work: [email protected]