The disposition of a U.S. real property interest by a foreign person (the transferor) is subject to income tax withholding (IRC section 1445). The transferee is the withholding agent. If you are the transferee, you must find out if the transferor is a foreign person.
Looking directly at the crucible when magnesium first reacts with oxygen can damage your eyes. 5 years ago Magnesium metal is burned in air forming magnesium oxide.
Me melting aluminum at my shop. The device is a 1200 Watt CalRod heating element embedded in a Perlite / Furnace Cement (4:1 ratio) refractory. The crucible is a ceramic jar I found at home, it holds 700 mL. The temperature is somewhere around 900C (1650F) or higher... Spent less then $50 dollars to make it.