THE LATEST GOVERNMENT GAZETTE DATED 29 APRIL REGARDING STAGE 4 REGULATIONS CAN BE DOWNLOADED HERE:
dma-level-4-gg43258-page-1-to-10-29th-april-2020
dma-level-4-gg43258-page-11-to-15-29th-april-2020
dma-level-4-gg43258-page-16-to-20-29th-april-2020
dma-level-4-gg43258-page-21-to-25-29th-april-2020
dma-level-4-gg43258-page-26-to-30-29th-april-2020
dma-level-4-gg43258-page-31-to-38-29th-april-2020
PLEASE SEE THE TWO MOST RECENT DOCUMENTS BELOW ABOUT COVID 19 WORKPLACE RISK ASSESSMENT
1.  covid19-workplace-risk-flowchart
2. covid-19-risk-assessement-analysis
OTHER DOCUMENTS:
Guide to PG Specification 2017
Draft Asphalt Mix Design Manual
Environmental Legislation Guideline Document for Asphalt Manufacture and
Road Construction
IBEF The road network 2013 SABITA
Temporary Asphalt Plants as a controlled emitter