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India
Zawar Mine

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 Location:
0 km NW from Zawar, India

  Regional Office:
Yashad Bhawan
Udaipur
India
313004
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
  • Silver
Mining Method
  • Blast Hole Stoping
  • Longhole open stoping
Processing
  • Flotation
Mine Life4.8 years (as of Jan 1, 2018)


Owners

Source: p. 251
CompanyInterestOwnership
Government of India 29.5 % Indirect
Vedanta Resources plc. 64.9 % Indirect
Hindustan Zinc Ltd. 100 % Direct
Vedanta Limited directly owns 64.9% of the share capital of HZL and has management control. The remainder of HZL’s share capital is owned by the Government of India (29.5%) and institutional and public shareholders and employees of HZL (5.6%).

Deposit Type

  • Vein / narrow vein
  • Sediment-hosted
  • Stratabound (SMS)


Summary:

The four deposits at Zawar Group are hosted by low grade metamorphosed sediments consisting of greywackes, phyllites, dolomites and quartzites that unconformably overlay the Pre-Cambrian basement. The lead-zinc-pyrite mineralisation is strata bound and occurs as vein-stringers reflecting the high level of fractures within the more competent dolomites. There are multiple ore bodies that are complex in some areas as the lenses split and enclose waste rock. The ore bodies are steeply dipping.


Mining Methods

  • Blast Hole Stoping
  • Longhole open stoping


Summary:

Zawar consists of four mines namely, Mochia, Balaria, Zawar Mala and Baroi.

Lead –Zinc ore is divided into stope blocks which are drilled and blasted using long hole open stoping mining method. Loading and transportation is done using combination of LHDs, LPDTs, LOCO and shaft hoisting to surface. Ore is either crushed to underground or at surface to feed mill. Waste is disposed in voids created during stoping operation or utilized for tailing dam construction.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

Ore processing is carried out in a conventional comminution and flotation plant having facility for “differential” as well as “bulk flotation” of zinc and lead metals. The ore is crushed primarily underground and then hoisted to the surface. Thereafter, the ore is crushed to 12 to 15mm in size before being milled to 74 microns. In the differential flotation process, milled ore is conveyed separately to two lead flotation circuits and undergoes a process incorporating roughing, scavenging and cleaning. Lead flotation tails proceed to two zinc flotation circuits comprising roughing, scavenging and cleaning. Zinc flotation tails are disposed in slurry form in designated tailings disposal area. Lead and zinc concentrates are thickened, filtered and then stored before they are sent to HZL’s smelters. In the bulk flotation process, milled ore is conveyed to the flotation circuit and undergoes a process incorporating roughing, scavenging and cleaning. Final bulk concentrate is thickened, filt ........

Recoveries & Grades:

CommodityParameter201920182017201620152014
Zinc Head Grade, % 2.362.52.732.82.82.8
Lead Head Grade, % 1.9722.122.11.71.7
Zinc Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityProductUnits201920182017201620152014
Zinc Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required85736057
Zinc Concentrate t  ......  Subscription required  ......  Subscription required3,4413,441
Lead Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead / Zinc Concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,350 kt1,056 kt1,004 kt
Annual milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required1,077 kt997 kt
Subscription required - Subscription is required.

Reserves at March 31, 2019:

CategoryTonnage CommodityGrade
Proven & Probable 10.1 Mt Zinc 3.4 %
Proven & Probable 10.1 Mt Lead 1.8 %
Proven & Probable 10.1 Mt Silver 31 g/t
Measured & Indicated 20.1 Mt Zinc 4.7 %
Measured & Indicated 20.1 Mt Lead 1.7 %
Measured & Indicated 20.1 Mt Silver 40 g/t
Inferred 75.2 Mt Zinc 4.6 %
Inferred 75.2 Mt Lead 2.7 %
Inferred 75.2 Mt Silver 48 g/t


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Feb 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Feb 20, 2020
....................... Subscription required ....................... Subscription required Subscription required Feb 20, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Annual Review 2017
Annual Review 2016
Annual Report 2015
Annual Review 2013
Subscription required - Subscription is required.

Aerial view:

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