Open-pit mine construction


The generic term “Project Delivery System” relates to the particular contractual arrangements for the approach implemented and utilized to accomplish the goals of a given project including: organization; risk allocation; assignment of responsibilities; pricing and payment obligations. For any given project there is likely to be more than one Project Delivery approach that would be appropriate, and there may be one approach that is best suited, depending on the Owner’s requirements and capabilities.

Tacmin Madini offers the following project delivery systems to the Open-pit Mining Industry:

●  Construction Management as Agent

●  Construction Management at Risk

●  ​​​​​​​Design, build and Operate


Agency implies that the Construction Manager (CM) is acting on behalf of the Owner and has been empowered to act for the Owner within the delegated or apparent authority that the Owner conveys to it. The Owner is relying upon the professional expertise and experience of its CM as Agent to act decisively on the Owner’s behalf to minimize risks of delays, cost overruns, or quality problems. Proactively applying the requisite tools, skills and experience of a seasoned Construction Management professional, is the Owner’s expectation.

Construction Manager (CM) at Risk is a type of project delivery method where the CM is also the Constructor. The CM will have a direct contractual relationship with the Owner, and in the case of Tacmin, the Owner has the option to incorporate Tacmin’s Design Expertise to provide engineering services for the project. During the construction phase, the CM will either self-perform the work, sub-contract the work to various specialty firms or will do a combination of both. The Contract will require the CM to contract directly with such subcontractors as may be necessary for construction or supply of various elements of the project.


Sometimes, engineering and construction firms, with the capability of performing all the engineering, design, procurement and construction themselves, are engaged to execute the total scope of the project. In other cases, teams are formed consisting of an engineering firm and a construction firm joining together (joint venturing) to deliver a “seamless” organization that is responsible to the Owner for the project’s total execution. The use of a single entity to execute projects in this manner has become more commonly known as “fast track design-build.” In the “fast track design-build” approach, the engineering and design, procurement and construction processes are overlapped to produce a shorter overall schedule.


Tacmin experts have been designing open-pit mines in a wide variety of commodities since 1996. Our pit, dump, ramp, haul route and rehabilitation designs are practical and with the exception of some greenfield projects, have in most cases been implemented by our customers. Given the turnkey nature, Tacmin contracts offer rapid turn-around since engineering design and implementation go hand-in-hand. As such and due to our multiple years of open-pit mine design experience, our expertise are capable, subject to as-built conditions, of re-designing open-pits to reduce the remedial work to the minimum and or else as a second phase determine the extent, resources and estimated costs associated with remedial work.

Preceded by the work outlined under the aforesaid section and upon finalization of a contract agreement, Tacmin commences with the implementation and rolling out with predetermined slope design reinstatement and remedial work, which is meticulously and continuously coordinated with technical and production personnel in anticipation to prioritize safe ongoing waste and ore production operations. Turnkey slope reinstatement work as offered by Tacmin, is carried out independently from existing mining operations and comprise of designs, planning, scheduling, drill and blast, load and haul, scaling of slopes and cleaning of berms to reinstate the slopes back to the prescribed mine designs and geotechnical recommendations.

Further to our civil engineering and open-pit mine design and construction experience, Tacmin has enhanced their turnkey slope reinstatement capability through the support and knowledge of our explosives partner Titanobel, offering 140 years of experience in explosives and blasting, including but not limited to over 60 hydraulic drilling rigs which are frequently replaced with the latest models, and 200 experienced drilling staff.