How Do They Do It?

The programme investigates how manufacturers achieve an annual output of one million tonnes of stainless steel in large quantities. It also reveals the methods used to safeguard cash with an uncrackable lock and to produce traditional Indian sugar through innovative processes.

"Stainless Steel, Safe Locks" is a programme presented as a single episode that dives into three seemingly unrelated but technically demanding subjects. The title signals the focus on industrial processes and security, setting the expectation that viewers will be taken behind the scenes of large‑scale manufacturing and high‑security solutions. The first segment asks how a facility manages to churn out a million tonnes of stainless steel. It probes the methods, machinery and organisational steps required to reach that staggering output, inviting the audience to consider the scale and efficiency behind such production. The next part shifts to the world of finance security, questioning how cash can be protected by a lock described as uncrackable. It examines the design principles and technology that make the lock resistant to tampering, highlighting the lengths taken to keep money safe. The final section turns to food production, specifically the creation of traditional Indian sugar. It explores the techniques used to craft this sweet staple, shedding light on the cultural and procedural aspects that distinguish it from modern industrial sugar manufacturing.