Sure thing. First thing’s first, you need a battery that can handle a full shift of rock and cold, and a solar cell that’s tough enough to shrug off dust and rockfall. Use a high‑efficiency monocrystalline panel, but mount it on a shatter‑resistant frame. The lantern body should be steel‑cased with a sealable, impact‑proof glass or polycarbonate lens. Keep the circuit simple – a basic buck converter to step the battery voltage down for the LED, and a built‑in over‑current protector. Add a touch sensor so you don’t need a flashlight to switch it on. If you want real ruggedness, go with a 10‑day battery backup and a quick‑release clip for the panel so you can swap it out when the sun is weak. That’s it, no frills, just a steady source of light that won’t quit when the mines get dark.