Weekly Quiz: Komatsu’s tariff burden cut | Vietnam’s $60bn high-speed railway | Canada’s underground nuclear waste facility

1) What percentage of US highways contractors experienced at least one vehicle crash in their work zones in the past year, according to a new survey?

• 5%
• 23.5%
• 60%

2) The Vietnamese government is reportedly considering a proposal from billionaire Pham Nhat Vuong to build a $60bn high-speed railway through the country. When does his company, Vinspeed, suggest it could complete the railway by?

• 2030
• 2040
• 2035

3) Canada’s Nuclear Waste Management Organisation has appointed five firms to design and plan an underground waste storage repository in Ontario. What will its construction cost?

• US$1 billion
• US$3.2 billion
• US$5 billion

4) A building materials company, Kenoteq, has received industry certification for its K-Briq low-carbon brick product. What is it made from?

• Recycled construction and demolition waste
• Graphene-infused concrete
• Compressed timber fibres and lime binder

5) Komatsu’s CEO Takuya Imayoshi now expects the company’s trade tariff pain to be as much as $140 million less than feared. What is behind the expected cut to the burden?

• A truce in a trade war between the US and China
• Plans to stop buying so much Chinese steel and move more production to the US
• A pivot to selling more machines in developing markets

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