Our mining group independent and objective advice helps you to generate value, maximize profits, and adhere to reporting and regulatory guidelines.
NMD Gold & Diamond
When you plan a new mine or mine investment, our worldwide joint venture team of multi disciplinary specialist can provide a comprehensive, integrated approach to your viability studies( including scoping, feasibility and prefeasibility), Due Diligence reviews(DD), economic evaluations, and risk assessments.
Based on a through understanding of underlying issues and professional judgment, our experienced global consultants offer technically sound opinions and achievable solutions that take account of associated risks. local project leaders specialize in coordinating and integrating information to appraise you of the technical issues within a business context and are well versed in international disclosure standards.
Sub services:
- Due Diligence and project reviews.
- Mining economics and finance.
- Mining risk assessment.
- Mining viability studies.
- Technical reporting to international mining codes.
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PIPI Mining

There are two types of pipe mining, namely open pit mining and underground mining.
Open-pit mining involves removing the layers of sand and rock found just above the kimberlite. Once exposed, the ore in the pit is broken up by blasting. A single blast can break approx. 3,000 tonnes of ore. Once the ore is broken, excavators load the ore into haul trucks and transport it to a primary ore crusher where the diamond extracting process begins. The Kimberley Big Hole is an example of open-pit mining.
In underground mining, miners tunnel through Earth’s crust to the kimberlite pipe. Tunnels are constructed in two levels, one above the other with funnels built to connect the two. Mining begins on the top level by blasting ore, which falls through the funnels and collects on the second tunnel. Here, loaders collect the broken ore and bring back to the surface for processing.
Alluvial Mining

Over thousands of years, the kimberlite pipe that reaches the Earth’s surface is eroded and weathered by wind, rain, rivers and streams.The eroded kimberlite bears rough diamonds, which are carried downstream. The first diamonds discovered in South Africa were from alluvial deposits.
Today, industrial alluvial mining involves building a large wall to collect the water in one area. Diamonds are often found in the gravel layer, which collects under layers of other material, such as mud, clay and underwater plant-life. Once the gravel is collected, it is hauled to the surface and prepared for processing.
Marine Mining

Marine mining involves extracting diamonds from the seabed, hundreds of meters under water. The earliest form of marine mining entailed shore diving, where a swimmer would collect diamond bearing gravel from the shallow seabed. Today technology has evolved to specialised ships that mine for diamonds deep out at sea. These specialised ships use a powerful crawler that sucks gravel on the seabed up through flexible hoses/pipes. Alternatively, they use a large scale drill mounted to the ship to excavate diamonds.
Processing plants at a diamond mine stock
Diamond are recovered from ORE in 5 stages, start from the underground mining that is when miners create a tunnel through the earth’s crust to access a kimberlite pipe. These tunnels are built parallel to each other with one slightly above the other. Then funnels are built in between to connect the 2 tunnels.
