Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Homework Help/Study Tips Expert

Your company operates an underground nickel mine producing 1.2 million tonnes of ore at a grade of 2.8% nickel. The orebody dips at 70° fairly regularly and is extensive along strike and down dip. Orebody width varies between 14 and 30 metres and averages 25 metres.

Until now the method of stoping has been by the sub-level blasthole stoping method, however due to dilution problems from a weaker than expected dunite hanging wall the decision to change mining method to mechanised transverse cut and fill stoping has been made. The UCS of dunite is 30 to 110 MPa.

The ore consists of a fine pentlandite disseminated in quartz dolerite. The UCS of the ore averages 250 MPA in a small range. The ore tends to be massive with little evidence of jointing or other structural features.

Cut and fill stope widths are to be 8 metres with 4m separating pillars, pillar recovery is to occur at a later date. Mining will be by 3 metre lifts using horizontal benching. Mechanised drilling is to be employed and 3m3 LHD’s are to be used to haul ore to the mill holes. The mill holes are to be equipped with grizzlies with 0.5m apertures.

Occasionally the ground will be wet, but dry conditions are generally experienced.

1) Design the drilling/blasting pattern showing hole diameter, hole depth, burdens, spacings, explosive types, primers and initiation system and indicate the initiation sequence.

2) Select drill types, makes and models and estimate the number of drill units required to maintain production at existing levels. For the purposes of this exercise assume adjacent stopes can be accessed through pillars and that a 2 production shifts per day system is used

3) find out average figures for tonnes/round and powder factors in kg/tonne

Submit your findings in a report format.

Homework Help/Study Tips, Others

  • Category:- Homework Help/Study Tips
  • Reference No.:- M98014
  • Price:- $70

Priced at Now at $70, Verified Solution

Have any Question? 


Related Questions in Homework Help/Study Tips

Patriot act summary paperprepare a short approximately five

Patriot Act Summary Paper Prepare a short (approximately five page) paper reviewing and critically evaluating the information regarding the Patriot Act. You should summarize what you have read and take a position (pro or ...

Learning style debatea learning profile is defined as the

Learning Style Debate A learning profile is defined as the way in which "people ‘come at' learning" and includes learning style, intelligence preferences, culture, and gender (Sousa & Tomlinson, 2012, p. 137). Consider f ...

Knowledge and information managementare there areas in your

Knowledge and Information Management Are there areas in your practice that you believe should be more fully explored? The central aims of nursing informatics are to manage and communicate data, information, knowledge, an ...

Assignmentas a consultant you need to develop an in-depth

Assignment As a consultant, you need to develop an in-depth analysis and evaluation of the selected agency's budgeting and then provide recommendations for improvement. Therefore, you will conduct interviews with agency ...

Assignment wmdwmd are a real concern for political leaders

Assignment: WMD WMD are a real concern for political leaders, the government, and military officers in the United States because WMD can cause heavy casualties and damage fabricated structures such as buildings, in addit ...

Select a country from the following list and research the

Select a country from the following list and research the political history and the religious history of the country from the last twenty years: Japan North Korea Iraq Syria Afghanistan Egypt Write an essay in which you ...

Philosophy - comparative world religions choose one topic

Philosophy - Comparative World Religions Choose one topic for your essay (approximately 4 pages, double spaced). 1) "What lifted the Jews from obscurity to permanent religious greatness was their passion for meaning." Ex ...

Interactions of hazardous materialsquestion coal is mined

Interactions Of Hazardous Materials Question : Coal is mined worldwide for use mainly at power plants to generate electricity. 1. Discuss why coal in a crushed, granulated, or pulverized form spontaneously combusts? In a ...

Edward theodore ed gein american psychoreview the case of

Edward Theodore (Ed) Gein, American Psycho Review the case of Edward Theodore (Ed) Gein, American Psycho, on page 81 and find another source of Eric W. Hickey's "Serial Murderers and their Victims" and write a 300-500 wo ...

Please choose one of the following questions to answer for

Please choose one of the following questions to answer for this week's assignment. When you respond to your fellow classmates this week, please reply to the other questions that you did not initially post on. This will h ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro