How to combine terms in a document term matrix? - Stack Overflow

Oct 2, 2017 ... I would replace those words in the preprocessing steps. I'm guessing you are preprocessing something along the lines of: library(tm) corpus ...

(PDF) TECHNICAL AND ECONOMIC OVERVIEW OF IRON ORE ...

In 2011, Australia continued to be the world's largest exporter of iron ore, ahead of Brazil and ... If the growth was to the detriment of other exporting sectors, due to an ... mineral policies that can take full advantage of this abundant natural capital. ... before it is crushed, screened and blended for export or local consumption.

Key Points Downstream Beneficiation Case Study ... - Extractives Hub

modern phase of the Australian iron and steel industry.i Prior to the ... the only significant iron ore beneficiation occurring in Australia was ... modernized and expanded in order to take advantage of the new state implemented bounty system. ... coalfields, already a deep-sea port able to handle an import and export trade, and ...

Mining in Canada | Mines Canada

These activities contribute socio-economic benefits—be they exploration and ... In Nunavut, gold and iron ore mining provide a glimpse of the mineral ... Approximately one-third ($3.2 billion), went to “downstream” mineral-processing industries, ... accounting for $89 billion—or 19%—of Canada's merchandise exports.

Mining's last stand? A UP way of life is threatened - mlive.com

Feb 18, 2016 ... Ore is trucked for processing in 320-ton haul trucks that stand 24 feet high and ... As one might expect in a no-frills Upper Peninsula diner, the food is ... After all, this is iron ore country and the two yawning open-pit mines a ... She declined to say whether the firm is seeking wage or benefit concessions, given ...

RAW MATERIALS | worldsteel

Recycled steel (sometimes called scrap steel) is one of the industry's most ... Iron ore and metallurgical coal are used mainly in the blast furnace process of ironmaking. ... global exports of iron ore in 2017 amounted to around 1.5 billion tonnes, ...