|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

SHAPING

|  | B28 |
WORKING CEMENT, CLAY, OR STONE

|  | B28B |
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding Fulltext... Hierarchy... Expanded...B22C; working stone or stone-like material Fulltext... Hierarchy... Expanded...B28D; shaping of substances in a plastic state, in general Fulltext... Hierarchy... Expanded...B29C; making layered products not composed wholly of these substances Fulltext... Hierarchy... Expanded...B32B; shaping in situ, see the relevant classes of Section E)

|  | B28B |
Note(s) In this subclass, the following term is used with the meaning indicated: "the material" means: clay or other ceramic compositions; slag; mixtures with water-setting properties given by clay, cementitious material, or slag.

|  | B28C |
PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER (preparing material for foundry moulds Fulltext... Hierarchy... Expanded...B22C 5/00)

|  | B28C |
Note(s) In this subclass, the following terms or expressions are used with the meanings indicated: "cement" or "mixtures of cement with other substances" includes plaster; "clay" includes like ceramic compositions.

|  | B28D |
WORKING STONE OR STONE-LIKE MATERIALS (machinery for, or methods of, mining or quarrying Fulltext... Hierarchy... Expanded...E21C)