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2. Sidewalk chalk - Wikipedia

   en.wikipedia.org/wiki/Sidewalk_chalk

   A child drawing on concrete. Sidewalk chalk is typically large and thick sticks of chalk ( calcium sulfate, gypsum, rather than calcium carbonate, rock chalk) that come in multiple colors and are mostly used for drawing on pavement or concrete sidewalks, frequently four square courts or a hopscotch boards. Blackboard chalk, typically used in ...

3. Calabash chalk - Wikipedia

   en.wikipedia.org/wiki/Calabash_Chalk

   Calabash chalk is a naturally occurring material composed of fossilized sea shells. However, it can be prepared artificially by combining clay, sand, wood ash and even salt. By molding and heating this mixture, the calabash chalk is obtained. [5] It is available as a powder, a molded shape or a block. [4] [5]

4. Chalk outline - Wikipedia

   en.wikipedia.org/wiki/Chalk_outline

   A chalk outline is a temporary outline drawn on the ground outlining evidence at a crime scene. The outline provides context for photographs of the crime scene, and assists investigators in preserving the evidence. Modern investigators almost never use chalk or tape as outlines at a crime scene to avoid contaminating the evidence.

5. Should You Be Worried If You've Been Eating Chalk? - Healthline

   www.healthline.com/health/eating-chalk

   Eating chalk often can disrupt your digestive system and cause damage to your internal organs. risks of eating chalk. Complications of eating chalk consistently may include: tooth damage or ...

6. Chalk n Duster - Wikipedia

   en.wikipedia.org/wiki/Chalk_n_Duster

   Chalk n Duster is a 2016 Indian drama film about commercialization of the Indian private ... The film was made tax free in Delhi, Rajasthan, Uttar Pradesh and Bihar. ...

7. Hagoromo Bungu - Wikipedia

   en.wikipedia.org/wiki/Hagoromo_Bungu

   Hagoromo Bungu Co., Ltd. Hagoromo Bungu ( Japanese: 羽衣文具, lit. 'Hagoromo Stationery') was a Japanese office supply and chalk company. It is best known for having produced the Hagoromo Fulltouch Chalk, a brand of blackboard chalk. [1] [2] [3] Though mainly sold in Japan and South Korea, the chalk came to be used worldwide for its ...