Project 8.4.5 – Using GPR to Improve Rehab Soil Characterisation
Dr DG Patterson April 2020
R1500,00
Description
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Benefits of an Apiary at a Rehabilitation Site
2019
Desktop study based on literature, a stakeholder workshop and specialist consultation, assessing whether keeping bees on rehabilitating mine land pays, for closure teams weighing aftercare options.
What this report foundThe financial benefit of bees to a rehabilitating site could not be modelled with confidence, and a field trial to show direct benefit is hard to configure...
R1500,00
The financial benefit of bees to a rehabilitating site could not be modelled with confidence, and a field trial to show direct benefit is hard to configure because so many variables affect rehabilitation. Apiaries suit sites where bee friendly plants are established, the return coming through honey yield rather than measured gains in biodiversity or ground cover, at low establishment cost.
Update of Coal Pillar Data Base, Strength Formula and Probability of Failure for South African Coal Mining
2012
Reviews how the failed and intact pillar record, tributary area loading and the safety factor concept have developed since 1960, for rock engineers and regulators.
What this report foundFailures continued after the safety factor approach was adopted, in pillars created both before and after it, so the record of failed workings has kept growing...
R1500,00
Failures continued after the safety factor approach was adopted, in pillars created both before and after it, so the record of failed workings has kept growing since the original 27 cases. The database was updated and re-analysed to revise the strength formula and to set out the probability of failure associated with pillar designs.
The Amenability of Some South African Bituminous Coals to Binderless Briquetting
2001
Laboratory compaction work with testing of compressive, abrasion and water resistance, giving steam and metallurgical coal producers a basis for judging which fines can be agglomerated.
What this report foundNine bituminous coals from the Witbank, Waterberg and Soutpansberg coalfields all formed compacts without a binder, and the process worked better with coking...
R1500,00
Nine bituminous coals from the Witbank, Waterberg and Soutpansberg coalfields all formed compacts without a binder, and the process worked better with coking coals. Reactive maceral content, free swelling index and Hardgrove grindability index governed briquette strength, with ash and kaolinite contents also contributing to bonding. Briquetting pressure, feed moisture and particle size distribution controlled the outcome.