Other
Flinn Scientific: Safety
Tons of science safety rules and information are available here, arranged by category. Resources are available for students and teachers on maintaining safety during labs and other activities.
Science Struck
Science Struck: Uses of Crucible Tongs
Discusses what tongs are used for and why crucible tongs are a very important tool in a laboratory and other settings. Describes the different types of crucible tongs, their uses, and some safety tips.