… similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred …
Explanatory notes
… similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred … for the same purposes, either as such or after crushing, also fall in this heading. The heading also includes shingle and flint. Round modules of flint are used in ball mills for crushing lime, cement, etc. Flint is, however, …