8/28/2021

Crystalline

Examples of crystalline in a Sentence we could see fish swimming beneath the crystalline ice of the frozen lake Recent Examples on the Web Her ivory-white hair, long now from months without a cut, and her eyes — the crystalline. Crystalline They can flow like a liquid, but have the orderly molecular structure of a crystalline solid.

  1. Crystalline Iceplant
  2. Crystalline Silica
  3. Crystalline Rock

Silica, Crystalline

Silica, Crystalline Menu Workers' Rights

Crystalline Iceplant

Overview

OSHA is currently analyzing comments submitted to a Request for Information to determine if revisions to Table 1 may be appropriate. See the Unified Regulatory Agenda for details.

  • Small Entity Compliance Guides
  • Sample Training Powerpoints
  • NewNational Emphasis Program – Respirable Crystalline Silica
  • NewInspection Procedures for the Respirable Crystalline Silica Standards

Crystalline silica is a common mineral found in the earth's crust. Materials like sand, stone, concrete, and mortar contain crystalline silica. It is also used to make products such as glass, pottery, ceramics, bricks, and artificial stone.

Respirable crystalline silica – very small particles at least 100 times smaller than ordinary sand you might find on beaches and playgrounds – is created when cutting, sawing, grinding, drilling, and crushing stone, rock, concrete, brick, block, and mortar. Activities such as abrasive blasting with sand; sawing brick or concrete; sanding or drilling into concrete walls; grinding mortar; manufacturing brick, concrete blocks, stone countertops, or ceramic products; and cutting or crushing stone result in worker exposures to respirable crystalline silica dust. Industrial sand used in certain operations, such as foundry work and hydraulic fracturing (fracking), is also a source of respirable crystalline silica exposure. About 2.3 million people in the U.S. are exposed to silica at work.

Free

Workers who inhale these very small crystalline silica particles are at increased risk of developing serious silica-related diseases, including:

  • Silicosis, an incurable lung disease that can lead to disability and death;
  • Lung cancer;
  • Chronic obstructive pulmonary disease (COPD); and
  • Kidney disease.

To protect workers exposed to respirable crystalline silica, OSHA has issued two respirable crystalline silica standards: one for construction, and the other for general industry and maritime.

OSHA is currently analyzing comments submitted to a Request for Information to determine if revisions to Table 1 may be appropriate. See the Unified Regulatory Agenda for details.

  • Small Entity Compliance Guides
  • Sample Training Powerpoints
  • NewNational Emphasis Program – Respirable Crystalline Silica
  • NewInterim Enforcement Guidance for the Respirable Crystalline Silica In General Industry/Maritime Standard

adjective

  • 1Having the structure and form of a crystal; composed of crystals.

    • ‘This crystalline structure is an orderly arrangement of ions known as a crystal lattice.’
    • ‘Changing the state of a substance with asymmetric bonds requires more energy than a crystalline structure would.’
    • ‘They consist of metals and nonmetals bound together in a crystalline or non-crystalline structure.’
    • ‘Quartz and gypsum are other familiar examples of crystalline structures.’
    • ‘This usually leads to a physical structure that is crystalline in nature.’
    • ‘Even if a perfect crystal is not formed, the internal crystalline structure can be shown.’
    • ‘Cristobalite is a crystalline form of silica that has a diamondlike structure.’
    • ‘Although most small molecule drugs come as crystalline powders, only one protein pharmaceutical, insulin, is formulated thus.’
    • ‘Silica exists in several crystalline forms, in a large number of colloidal forms, and as an amorphous solid.’
    • ‘As more of the chains are caused to line up in an ordered manner, the polymer becomes more crystalline.’
    • ‘Glass itself does not have a crystalline structure as minerals do.’
    • ‘Silicate minerals are classified primarily on the basis of their crystalline structure.’
    • ‘Crystal gems do not soak up water, because of their closely packed crystalline structure that does not permit water molecules to enter.’
    • ‘Haematite is iron oxide - a grey form of the mineral that has a larger crystalline structure than the more familiar red stuff, or rust.’
    • ‘Many substances - particularly those with crystalline structures - form differently when in low gravity.’
    • ‘Both are crystalline forms of sulfur, but their structures are slightly different.’
    • ‘A crystalline metal is composed of a lattice of positively charged ions.’
    • ‘Saccharin is a white, crystalline powder that can be as much as 500 times sweeter than sucrose.’
    • ‘When it precipitates in the gall bladder it forms crystalline solids called gallstones.’
    • ‘At higher elevations on these mountains, the parent material is acid crystalline rock.’
    1. 1.1literary Very clear.
      • ‘How much more fun law school would be if the prose were crystalline!’
      • ‘He credits this awesome landscape with inspiring many of the crystalline passages of prose that have illuminated his other books.’
      • ‘Very often, these images are transcendentally brilliant, particularly those shot in crystalline black and white.’
      • ‘Bach invokes these emotions within a structure so crystalline that we can't begin to fathom its perfection.’
      clear, transparent, limpid, crystal clear, crystalline, see-through
Crystalline

Origin

Crystalline Silica

Middle English from Old French cristallin, via Latin from Greek krustallinos, from krustallos (see crystal).

Crystalline Rock

Are You Learning English? Here Are Our Top English Tips