XXXI
James Polder conducted them to the river, sweeping away in a wide curve beneath solid grey stone bridges into a region of towering hills. They turned to the left, and, walking on a high embankment, passed blocks of individually pretentious dwellings, edifices of carved granite, alternating with the simpler brick faces of an older period. A narrow, whitely dusty sweep of green park was followed by a speedy degeneration of the riverside; the houses shrunk to rows of wood marked by the grime of steel mills. Soon after they reached a forbidding fence; and, passing a watchman's inspection, entered into a clamorous region of sheds, tracks and confusing levels such as Howat Penny had viewed from the train.
"I'm in the open hearth," Polder told them, leading the way over a narrow boardwalk, still skirting the broad expanse of the river. "It's a process, really, but the whole mill is called after it. We make steel from iron scrap; that's our specialty in the Medial Works; and our stuff's as good as the best. The bigger concerns mostly use pig. Turn in here." They were facing the towering end of an iron shed, and mounted a steep ascent to gain the upper entrance. The multiplication of noises beat in an increasing volume about Howat Penny. Below him a locomotive screeched with a freight of slag; beyond was a heap of massive, broken moulds; and a train of small trucks held empty iron boxes beside an enormous bank of iron scrap dominated by a huge crane swinging a circular magnet that dispassionately picked up ton loads and bore them to the waiting cars.
Inside he gazed through a long vista under a roof lost in tenebrious shadow. On one side were ranged the furnaces, a continuous bank of brick bound in iron; each furnace with five doors, closed with black slides in which a round opening emitted an intolerable, dazzling white glare. But few men, Howat thought, were visible in proportion to the magnitude of the work; deliberately engaged, with leather shields hanging from their wrists and blue spectacles pushed up on their grimy brows.
A crane advanced with the shrill racket of an electric gong, its operator caged in midair, and herculean grappling chains swinging. A grinding truck, filling the width of floor, moved forward to where Howat stood. It was, Polder told him, the charging machine. An iron beam projected opposite the furnace doors, and it was locked into one of the charging boxes, filled with scrap metal, standing on the rails against the furnaces. A man behind him dragged forward a lever, the slide which covered a door rose ponderously on a blinding, incandescent core, and the beam thrust forward into the blaze, turning round and round in the emptying of the box. It was withdrawn, the slide dropped, and the machine retreated, its complex movements controlled by a single engineer at crackling switches where the power leaped in points of light like violets.
At another furnace, an opened door, where the heat poured out in a constricting blast, workmen were shovelling in powdery white stone; moving up with their heads averted, and quickly retreating with shielding arms. "That's dolomite," James Polder's explanations went rapidly forward. "They are banking up the furnace. The other, in the bins, is ferro manganese." He procured a pair of spectacles; and, with a protected gaze, Howat looked into a furnace, an appalling space of apparently bubbling milk over which played sheets of ignited gases. The skin on his forehead shrivelled like scorching paper.
"I particularly wanted you to see a heat tapped," Polder told Mariana. "And they're making a test at number four." They followed him to where a small ladle of metal had been dipped out of a furnace. It was poured, with a red-gold shower of sparks, into a mould, then dropped in a trough of water. The miniature ingot, broken under the wide sweep of a sledge, was examined by a lean, grizzled workman—"the melter"—who nodded. "We must get back of the furnace," Polder continued, indicating a narrow opening between brick walls through the unstopped chinks of which seethed the scorifying blaze.
Howat Penny stood at a railing, looking down into an apparent confusion of slag and cars, pits and gigantic ladles and upright moulds set upon circular bases. A crane rumbled forward, grappled a hundred-ton ladle, a fabulous iron pot, and petulantly deposited it under a channel extending out from the base of the furnace where they had been stationed. A workman steadied himself below their level and picked with a long iron bar at a plugged opening. It was, James Polder went on, the most dangerous moment of the process—"sometimes the furnace blows out." The labour of tapping was prolonged until Howat was conscious of an oppressive tension. Workmen had gathered, waiting, in the pit. More appeared along the railing above. This was, he felt, the supreme, the dramatic, height of steel making. The men suddenly seemed puny, insignificant, before the stupendous, volcanic energy they had evoked. The tapping stopped. Polder commenced, "It will be rammed out from the front—"
A stunning white flare filled the far roof with a dazzling illumination; and, in a dull explosion, a terrific billowing of heat, a cataract of liquid steel burst out through lambent orange and blue flames. It poured, searing the vision, into the ladle, over which rosy clouds accumulated in a bank drifting through the great space of the shed. Nothing, Howat thought, could contain, control, the appalling expansion, the furious volume, of seething white metal. He was obliged to turn away, blinded by sheets of complementary green hanging before his eyes.
The uproar subsided, the flooding steel became bluer, a solid stream curving into the black depths of the ladle. Vapours of green and sulphur and lilac shivered into the denser ruby smoke and rising silver spray. Polder called a warning into Mariana's ear, they drew back as a lump of coal was heaved up from the pit, into the ladle. A dull vermilion blaze followed, and Howat Penny partly heard an explanation—"recarburizing." He could now see the steel bubbling up to the rim of the container. Men, Polder said shortly, had fallen in.... Utterly unthinkable. With a sudorific heat that drove them still farther back the slag boiling on the steel flowed in a gold cascade over a great lip into a second receptacle below. That was soon filled, and gorgeous streams and pools widened across the riven ground. The steel itself escaped in a milky incandescence. "A wild heat," James Polder told them, pleased. "The bottom of a furnace may drop out. I was almost caught in the pit at Cambria." The crane chains swung forward, picked up the ladle of molten metal, and shifted it through the air to a position over a circular group of moulds. There, a valve opened, the steel poured into a central pipe. "Bottom-filled," Polder concluded, assisting Mariana over the precarious flooring; "the metal rises into the ingot forms."