March 21, 2023
  • CIL subsidiaries to Commission Five M-Sand Plants by 2024.
  • CIL facilitates processing of waste overburden at its open cast mines under overburden (OB) rocks-to- M-Sand initiative.
  • During opencast mining, overlying soil and rocks are removed as waste to extract coal and OB is layered in dumps.
  • OB rocks are used in levelling up land for the construction of roads and railway tracks.
  • M sand is produced by crushing rocks, and quarry stones to a stipulated size of 150 microns. It is different from River Sand.

Properties of M Sand (Manufactured Sand)

  • High concrete strength compared to river sand
  • The sand particles of M sand are in cubic form. This makes the bond stronger.
  • zero silt content.
  • Better quality control from being manufactured in a controlled environment
  • Sand Mining Framework (2018) prepared by Ministry of Mine envisages M-Sand from crushed rock fines (crusher dust), sand from OB of coal mines.
  • Benefits of M- Sand
    • More cost-effective than using natural sand.
    • Reduce the need for mining natural sand, which can have negative environmental impacts.
    • Reduce the amount of water required for construction projects, as it does not require washing before use.
    • Help maintaining water table.
  • Sand is classified as a ‘minor mineral’ under Mines and Minerals (Development and Regulations) Act, 1957, and administrative control vests with State Governments.
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