Coal gas und hydraulic press: was sie gemeinsam haben

1. Schritt 1. Coal gas — ist hergestellt aus — Kohle. The gas was made by the dry distillation of coal.
2. Schritt 2. Kohle — ist Material für — Aspirin. The raw materials of early pharmaceutical synthesis were products of coal tar distillation.
3. Schritt 3. Aspirin — nutzt — Tablet (medicine). Produced as tablets.
4. Schritt 4. Tablet (medicine) — nutzt — Hydraulic press. Tablets are pressed.

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