Products & Services

Quarry ServicesConstruction & PropertyPremix ProductsBituminous Products
Provision of turnkey quarry operation services by the Group’s subsidiary, K. S. Chin Minerals Sdn Bhd that includes the production of aggregates through the following 6 stages:



Stage 1: Quarry Face Development

Quarry operations begin with the removal of overburden (clearing of vegetation and top soil) using excavators and dumpers in order to expose the underlying bedrock. Removal of overburden is usually carried out simultaneously with quarry face development to ensure that optimum work area is achieved.

Overburden Removal

Step 1: Overburden Removal

Removing of overburden or earth
covering prior to drilling and blasting.

Rock Face Development

Step 2: Rock Face Development

Creating benches at the rock face for rock extraction.


Stage 2: Drilling and Blasting

After stage 1, quarry managers will employ drilling machines to drill holes for installation of explosive agents in the bedrock.
A licensed shot-firer then blasts the bedrock; the resulting fragments of rocks are then transported for crushing.


Step 1: Drilling

A highly specialised crawler drill is employed to facilitate
the drilling of the bedrock.

Charging of Explosives

Step 2: Charging of Explosives

The drilled holes are then filled with blasting agents.


Step 3: Blasting

Blasting work in progress.


Step 4: Preparing for transport

The blasted rocks are ready to be transported for crushing.


Stage 3: Loading & Hauling

The blasted stone blocks are loaded by hydraulic excavators or wheel loaders into dump trucks to the crushing plant.

Loading & Hauling


Stage 4: Crushing

At the crusher plant, the blasted rocks are reduced to the desired sizes. A crusher plant usually comprises 3 sections:

  • Primary crusher: crushes blasted rocks to between 6 inches to 9 inches.
  • Secondary crusher: further reduces the size of the crushed rocks down to below 2 inches.
  • Tertiary crusher: produces finished products of either 3/4 to 3/8 inches or quarry dust.

Screens are used to separate the stones into graded sizes as purposed to their end usage in infrastructure and building construction.



Stage 5: Sales Loading

Finished quarry products are transported to end-users, which include property developers, premix concrete manufacturers and construction companies.

Sales Loading



Stage 6: Sales and Marketing of Aggregates

The aggregates are then sold for use in the development and maintenance of road and railway infrastructure and the construction industry.
Types of aggregates marketed include:


Type of Aggregates Size of Aggregates Usage and Applications
Crusher Run 2 inches and below Base material for road construction and sometimes used as filler
Aggregates 3/4 inch, 3/8 inch, 1 inch and 1.5 inches Base material used in concrete, mortar, roadstone and asphalt premix
Armour Block 1 foot to 6 feet Used for reclamation and break water works
Quarry Dust Dust form Base material for Premix Products, used as a filler and substitute for sand
Quarry Waste By-Product of Quarrying Base material for housing platform, used as a filler and substitute for sand
Ballast 2 inches by 3 inches Coarse stone or gravel laid to form a bed in railway track construction
Stone Column 2 inches by 3 inches Used in the filling of stone columns to increase the tolerance of stress and liquefaction of subsurface soils
6 by 9 Block 6 inches by 9 inches Used for rubble retaining and drainage walls
2" Crusher Run   3/4" Aggregates   3/8" Aggregates   Quarry Dust  2" x 3" Ballast