CHAPTER FOURTEEN
THE FIRST FIRE
The Mechanical Dome, late 1980
The first serious fire on Mars produced almost no flame.
It began in an electrical cabinet inside the Mechanical Dome during second shift.
A cable lug loosened under repeated thermal cycling. Resistance increased. Heat built inside insulation. The first sign was a smell.
Voss lifted his head from the lathe.
“Stop.”
The machinist beside him killed the spindle.
“What?”
Voss smelled the air.
“Plastic.”
Three seconds later the cabinet alarm sounded.
The fire suppression system dumped inert gas into the enclosure, but smoke escaped before the dampers closed.
The Mechanical Dome went from noisy to silent in less than a minute.
Machines stopped. Ventilation shifted to emergency mode. Pressure doors sealed between sections. The cabinet alarm kept sounding.
Li reached the cabinet wearing a breathing mask.
“Temperature?”
“Falling.”
“Open?”
“No.”
“Good.”
They waited.
On Earth, waiting beside a sealed electrical cabinet would have been inconvenient.
On Mars, opening it too soon could contaminate the atmosphere, restart combustion or force evacuation through airlocks into suits.
Shaw arrived from the central spine.
“How bad?”
Li pointed at the thermal indicator.
“Contained.”
“What did we lose?”
“Power distribution to half the fabrication line.”
“How long?”
Voss answered without looking up. “If the bus is damaged, days.”
It was damaged.
The replacement assembly existed on Earth.
Manifested.
White priority.
Estimated arrival: seven months.
Li stared at the message.
“Change priority.”
Morel shook his head. “There are medical pumps ahead of it.”
“Then we make one.”
The damaged bus assembly became the most complicated electrical component yet reproduced on Mars.
Copper stock was limited. Insulators had to be machined from imported ceramic blanks. The enclosure itself could be repaired. The contact assemblies required precision the workshop had not previously attempted.
For four days the Mechanical Dome ran at reduced capacity.
Teams worked around the clock.
The Chinese section fabricated the bus bars. Voss machined mounting hardware. Japanese technicians rebuilt the protection relays. Han rewrote load procedures so the colony would not trip the remaining circuits.
On the fifth day Li stood beside the repaired cabinet.
Shaw joined him.
“You trust it?”
“No.”
She raised an eyebrow.
“I trust the people who built it,” he said. “The machine must earn the rest.”
They energized the line.
Nothing happened.
Which was exactly what they wanted.
Then one machine started.
Then another.
The Mechanical Dome returned to life in sections.
That evening Shaw sent Earth a report recommending that future Mars cargo prioritize raw material and flexible manufacturing equipment over large inventories of finished spares.
The conclusion irritated several manufacturers.
It delighted others.
A new industrial market had appeared.
Not for products.
For the ability to make products.