Parked in a gravel lay-by off the A65 ring road outside Harrowby, Ada Morland sat behind the wheel of her white transit van with a lukewarm thermos of tea wedged into the dashboard cup-holder and rain drumming against the windscreen. On the passenger seat, her portable brass Courtesy resonator hummed with the live audio feed from Lathmere. Suddenly, cutting through Pella’s quiet transcription, a razor-thin, high-hum whistle pierced the speaker grille. The clear sound signed name of a high-pressure lead main entering vapour-lock bubbling blast.
Ada’s spine straightened instantly, thirty years of heavy-duty boiler-room reflexes overriding the dreary Yorkshire drizzle outside her window. Her calloused right hand dropped the thermos lid and snatched up a heavy forged steel wrench from the passenger footwell, rapping it sharply against the cast-iron horn of the resonator to break the hypnotic rhythm in the cellar four hundred miles away. Her knuckles went white. She heard the distant rattle of the six-inch Lowbank pipe hub shaking in its wall brackets.
‘Forty-four pounds on the dial and climbing two pounds a second!’ Eren Tal’s voice barked through the brass horn from the washroom floor. Ada didn’t need to see the gauge to picture the physics inside the pipe: prolonged sound deep ring from the deep drain tube had set up a standing ringing wave in the un-isolated lead riser, collapsing tiny steam voids against the soft metal collar like thousands of tiny hammer blows.
