skos:altLabel | - Waltham Abbey
- Waltham Abbey, Essex
- Royal Powder Mill
- British Royal Gunpowder Manufactory
- Gunpowder Manufacturer
- Explosives Research and Development Establishment, Waltham Abbey
- PERME Waltham Abbey
- RGPF Waltham Abbey
- Royal Gunpowder Factory
- Royal Gunpowder Factory, Waltham Abbey
- Royal Gunpowder Manufactory at Waltham Abbey
- Royal Gunpowder Mills
- Waltham Abbey Royal Gunpowder Factory
- Waltham Abbey Royal Gunpowder Mill Railway
- Waltham Abbey factory
- powder mills
- Explosives Research and Development Establishment (ERDE), Waltham Abbey
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