4. The World Energy Council estimate for Canadian bitumen is 1.7 trillion barrels of BIP (2/3 of world bitumen resource), if that was counted in global reserves, how would that change the oil reserves plot of the BP statistical review? 5. What are the 10 most-produced materials globally (by mass)? And what are the CO2 intensities (kgCO2/kg_product) for those materials. Show in a bar chart. 6. How many times more productive are the best current coal mining operations in North America, compared to our example of Drumheller AB in 1947. What does this analysis indicate regarding the future of jobs in coal mines? 7. Coal-fired electricity generation, steel and cement are a heavy-industry trio. Describe the synergies that these provide, and why they have been a mainstay of global development.