Top 10 Mining companies in India

 Here is a list of top 10 mining companies in India; these are the mining organizations involved in exploration and production of metal and non-metal products. Ranking process of these best mining companies in India.

1 | Vedanta Resource
Corporate office – London, UK | Establishment – 1976 |
Business – Mining | Websitevedantaresources.com |
Among the top mining companies in India, Vedanta resource is a metal and mining organization headquartered in London, Uk. The company is operating in many countries including India and major products are copper, aluminum, zinc, lead and gold.

2 | National Mineral Development Corporation
Corporate office – Hyderabad, Andhra Pradesh | Establishment – 1958 |
Business – Mining | Websitewww.nmdc.co.in |
A government of India organization and comes under the Ministry of steel, it is the largest iron ore producer in the country. The company has total 5 mines located in Karnataka, Chhattisgarh, Madhya Pradesh and Karnataka which produces iron, dolomite, limestone, gypsum, bentonite, copper, diamond etc.
3 | Hindustan Zinc Limited
Corporate office – Udaipur, Rajasthan | Establishment – 1966 |
Business – Mining | Website www.hzlindia.com |
Hindustan Zinc is a leading producer of zinc and among the best mining companies in India. It is part of giant Vedanta group and headquartered in Udaipur, Rajasthan. The company has 3 refiners in Rajasthan and one in Andhra Pradesh. It’s major mine products are Lead, zinc, Silver and cadmium.
4 | National Aluminium Company limited
Corporate office – Bhubaneswar , Odisha| Establishment – 1981 |
Business – Mining | Websitewww.nalcoindia.com |
National Aluminium company limited or NALCO is a government owned organization working under Ministry of Mines. The company is rated best in mining industry in India and largest producer of Aluminium and bauxite. It’s refinery units are located in Damanjodi and Nalcongar, Angul and corporate office is located at Bhubaneswar.
5| Hindalco Industries
Corporate office – Mumbai, Maharashtra | Establishment – 1958 |
Business – Mining and Metal | Website www.hindalco.com |
Hindalco Industries is a flagship company of Aditya Birla and one among the top 10 mining companies in India. The public organization is BSE and NSE listed, which started Aluminium production in year 1962. It is headquartered in Mumbai, Maharashtra and headed by Mr. Kumar Mangalam Birla.
6 | Hindustan Copper Limited
Corporate office – Kolkata, West Bengal | Establishment – 1967 |
Business – Mining – Copper | Website www.hindustancopper.com |
Hindustan Copper limited is a Government company working under the Ministry of Mines. It was established in year 1967 and has established mines and metal refinery work at Khetri, Rajasthan and Rakha, Jharkhand. The company is a well known name in mining industry in India and also produces gold, silver, tellurium and nickel sulphate.
7 | Rajasthan State Mines and Minerals Limited
Corporate office – Udaipur, Rajasthan | Establishment – 1974 |
Business – Mining – Gypsum | Website www.rsmm.com |
Rajasthan State Mines and Minerals limited is state owned organization and leading mining company in India. The company is engaged in non-metallic mining of Lignite, Rock phosphate, limestone and gypsum. It was established in year 1974 and headquartered in Udaipur, Rajasthan.
8 | Gujarat Mineral Development Corporation
Corporate office – Ahmadabad, Gujarat | Establishment – 1963 |
Business – Mining | Website www.gmdcltd.com |
Gujarat mineral development corporation limited is a leading mining company in India which is a Gujarat government undertaking company established in year 1963. The organization is engaged in production of lignite, bauxite and fluorspar.
9 | Kudremukh Iron Ore Company Limited
Corporate office – Mangalore, Karnataka | Establishment – 1976 |
Business – Mining | Website www.mynetbrains.com |
Kudremukh Iron Ore Company limited is a government owned company which is rated among the top 10 mining companies in India. The company is engaged in mineral exploration, mine and iron ore concentrate business. It is based at Mangalore and plant facility has capacity to produce 7.5 million tonnes per annum.
10| Bharat Aluminium Company
Corporate office – London, Uk | Establishment – 1965 |
Business – Mining | Website www.balcoindia.com |
Established in 1965 it was formed as a government organization and later it was taken over by Vedanta resource in year 2001. BALCO is also engaged in the production of aluminium alloys and special aluminium for transmission lines and missiles.
If you would like to add a company that you consider most appropriate in ranking of top mining companies in India please suggest it here

Top 10 Construction Companies in Chennai

Here is a list of top 10 construction companies in Chennai; these are the best companies in Real estate and development sector.
 
1 | Unitech
Corporate Office – Gurgaon, Haryana | Establishment – 1972 |
Business –  Real estate developer and construction | Website- www.unitechgroup.com|
Unitech Builders is one the best construction company in Chennai. The Company has been dealing in real estate business comprising commercial, residential and IT parks construction. So far it has completed many prestigious projects all across the country including Gurgaon, Bangalore, Noida etc.

2 | GVR Infra Projects Ltd
Corporate Office – Chennai,Tamilnadu | Establishment – 2004 |
Business – Construction, power, Railway and Road| Website- www.gvrinfra.com |
GVR infra Project ltd is flagship company of giant GVR group with the annual turnover more than 240 million dollar. The GVR diversified product range consists of infrastructure, railway, bridges, flyover and power. It is one of the leading construction company in india which has completed numerous Real estate and infrastructure projects in Chennai.
3 | Larsen & Toubro (L&T)
Corporate Office – Chennai, Tamilnadu | Establishment – 1938 |
Business –  Construction, Engineering and manufacturing | Website- www.larsentoubro.com|
Larsen & Toubro is one of the best construction company in India. Company has been working in various sectors such as infrastructure, power, engineering and manufacturing. It is largest construction group in India which has a global presence and overseas offices almost in every big country.
4 | Coromandel Engineering Company Ltd
Corporate Office – Chennai, Tamilnadu | Establishmen – 1947 |
Business – Industrial Construction and Real estate | Website- www.coromandelengg.com
It is a flagship company of Murugappa Group, founded in 1900 a top construction company in chennai which has completed many prestigious projects such as Anna salai LIC Building, hotel Chola Sherton and hotel Holiday inn in Bangalore.
5 | Doshi Housing Pvt Ltd
Corporate Office – Chennai, Tamilnadu | Establishmen – 1989 |
Business – Insurance | Website- www.doshihousing.com |
Doshi Housing is a real estate devloper, constructed over 2 million square feet. Mainly deals in residential and commercial building construction has completed more than 40 projects including Doshi Trinity park, Doshi Tranquil and Doshi Nivedita.
6 | East Coast Construction & Industries Ltd ( ECCI )
Corporate Office – Dubai, UAE | Establishment– 1962 |
Business –  Power, Building and Dam Construction | Website- www.ecci.in|
ECCI is a well known name in construction industry; it works as turnkey project company which holds ISO 9001:2008 and few other certifications. The company mainly deals in building construction, dams, water supply and power projects with a annual turnover more than 7200 million rupees.
7 | Eversendai Construction Pvt Ltd
Corporate Office – Chennai, Tamilnadu | Establishment– 1983 |
Business – Construction designing and drafting | Website -www.eversendai.com|
This Malaysian company has a strong hold in construction, engineering and power project which was founded in 1983. It is group company which operated from Chennai is offering design and drafting solution to other companies as well.
8 | Siva Realty
Corporate Office – Chennai, Tamilnadu | Establishment – 2009 |
Business –  Construction, shipping, agro | Website- www.sivagroup.in |
Siva group is well known name in the industry which has major impact in many products from minerals to shipping. Shiva Realty is a flagship company established in 2009 and has completed numerous real estate commercial and residential project in Chennai.
9 | Arun Excello
Corporate Office – Chennai, Tamilnadu | Establishment – 1989 |
Business – Real estate, power and construction | Website- www.arunexcello.com |
Arun Excello is chennai based real estate company, which has completed more than 2.5 lacs square feet residential projects. It was first real estate company in Chennai which established a township project.
10 | Lancor
Corporate Office – Chennai, Tamilnadu | Establishment – 2002 |
Business – Real estate developer and construction | Website- www.lancor.in/
Lancor holding pvt. ltd is Chennai based real estate developer established long back 25 years ago. This ISO 9001 certified company has completed many commercial and residential projects in Chennai including Landmark, Adobe Valley etc.
If you would like to add a Construction Company that you consider most appropriate in this ranking of top construction companies in Chennai. Please suggest it here

Top Construction Companies in India

 Here is a list of top 10 construction companies in India; these are the best companies in Real estate and development sector.

1 | GMR Group
Websitewww.gmrgroup.in | Business – Construction
Corporate Office – Bangalore, Karnataka | Establishment – 1978
One of the fastest growing construction company in India having implemented many project successfully across India as well as abroad. They focus mainly on Highways , Airports, Urban Infrastructure sectors and Energy.

2 | Lanco Infratech Limited
Websitewww.lancogroup.com | Business – Construction
Corporate Office – New Delhi, India | Establishment – 1986
One of the best construction companies in India working innovatively to achieve quality and excellence. They have a foothold in the sector of Procurement, Construction (EPC), Engineering, Natural Resources, Infrastructure and Power.

3 | Man Infraconstruction Limited
Websitewww.maninfra.com | Business – Construction
Corporate Office – Mumbai, Maharashtra | Establishment – 1964
One of the leading company having expertise in Industrial Constructions, Commercial & Institutional Constructions, Road constructions, Residential Constructions and Port Infrastructure.

4 | Atlanta Limited
Corporate Office – Mumbai, Maharashtra | Business –  Construction
Websitewww.atlantainfra.co.in | Establishment – 1977
An ISO 9001:2008 certified company having presence in Construction (EPC), Procurement, & Realty, Engineering, and Public Private Partnership (PPP) Infrastructure Development Projects and Contract mining of coal and limestone.

5 | Simplex Infrastructures Limited
Corporate Office – Kolkata, West Bengal | Business – Construction
Websitewww.simplexinfrastructures.com | Establishment – 1924
Simplex is among the top ten construction companies in India providing solutions in construction and infrastructure sector and was the first to introduce driven cast-in-situ concrete piling in India and South East Asia.

6 | IVRCL Limited
Website -www.ivrcl.com | Business – Construction & Engineering
Corporate Office – Hyderabad, Andhra Pradesh | Establishment – 1987
IVRCL tops the list of top construction companies in India. IVRCL has expertise in water segment , industrial structures, buildings, flyovers, , bridges, real estate, highways, power transmission , roads, power transmission, railways, real estate & water treatment plants. They have also set-up sea water desalination plant.

7 | Hindustan Construction Co. Limited
Website -www.hccindia.com | Business –  Real estate development, Construction & Engineering Corporate Office – Mumbai, Maharashtra | Establishment -1926
HCC is a major provider of construction and engineering services. HCC has developed some of the significant projects which includes Lavasa which is a planned hill city near Pune and nuclear power generation plants.

8 | Ramky Infrastructure Limited
Website -www.ramkyinfrastructure.com | Business –  Real estate development & Construction
Corporate Office – Hyderabad, Andhra Pradesh | Establishment – 1994
Ramky Infra is a construction company having done many infrastructure and construction projects in different sectors which includes the Railways, Irrigation and Roads. Company has five zonal offices in India and an office in UAE to handle international projects.

9 | IL&FS Engineering and Construction Company Limited
Website -www.ilfsengg.com | Business – Construction & Engineering
Corporate Office – Hyderabad, Andhra Pradesh | Establishment – 1988
One of the leading infrastructure development company working in various segments which includes Thermal and Hydel Power, Buildings and Industrial Structures, Roads and Irrigation and with their innovative approach company is trying to extend their business in new segments.

10 | Gammon India
Website -www.gammonindia.com | Business – Civil Engineering & Construction
Corporate Office – Mumbai, Maharashtra | Establishment – 1922
One of the best civil engineering and construction company in India. Some of the toughest projects executed by company includes Gateway of India and fast breeder reactor. The companies core competencies comprises of transmission lines,infrastructure management and power sector.

If you would like to add a Construction Company that you consider most appropriate in this ranking of top construction companies in India. Please suggest it here

How many bricks required for 1 cu.m wall ???



1.     How many bricks required for 1 cu.m wall of 11/2 brick thickness ???



ANSWER:

 
                                       For a 12   brick thickiness wall (i.e. 30cm nominal thickness). Therefore nominal volume of wall of 20m length , 1m  height & 0.3m thickness = 20*5*.3 = 30 cu.m.
                          Normally mortar joint will be less than 1cm, but assuming mortar joint as   1cm thickness, then actual thickness of wall will be = 29cm. therefore , actual thickness = 20*5*.29 = 29 cu.m.

      Nominal Size of standard brick =  20cm*10cm*10cm.
 
       Number of std bricks = 29/(.20*.10*.10) =  14500

       Then,
           Number of bricks per cu.m(nominal) = 14500/30 =483.3333
                                                                                =483 bricks.

      Considering 5% breakages, wasteges,etc (assume)
                    So,Number of bricks required for 1 cu.m = 500 bricks

        RESULT:

        Therefore, number of bricks required for 1 cu.m = 500 bricks .