Where are your facilities? Are they secure?
Our facilities are in Siberia, Irkutsk region.
We have onsite security and two 24/7 engineers. Each individual has an alarm button on their keychain. When pressed, it alerts the Russian National Guard, whose reaction time is ten minutes.
What about fire protection? Fire risk is low. All racks are metallic, and the wiring has self-extinguishing cables. A cascade of circuit breakers protects each shelf. There is a separate dry disconnector for every 480 units.
Every 960-unit module has 4 fire-extinguishers stationed at each corner. We routinely check miners for heat spots with a thermal monitor.
Also, we have a fire department next door (300m from our building).