|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

SHAPING

|  | B28 |
WORKING CEMENT, CLAY, AND 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 materials in their 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) The term "the material" is used throughout to mean: 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 sub-class: the term "cement" and the expression "mixtures of cement with other substances" are to be understood to include plaster; the term "clay" is to be understood to include like ceramic compositions.

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