SYDNEY — Shares of NRW Holdings Ltd. rose more than 5% on Tuesday, as mining services and engineering contractors rallied on the same day that sector peer Monadelphous reaffirmed strong half-year guidance.

NRW shares gained 31 cents, or 5.07%, to A$6.43 in afternoon trading, after reaching as high as A$6.52. About 944,000 shares changed hands, valuing the company at about A$3 billion. The stock is up about 31% over the past year.

NRW did not release market-sensitive news on Tuesday.

The move came alongside gains across the contracting sector. Monadelphous was the biggest gainer on the ASX 200, on the back of first-half revenue of $1.7 billion and a........

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