downward sloping, narrow ledge that ran underneath a sheer wall of rock at the edge of the pit. Looking at the rock walls, Nancy could see long, grooved striations in the rock. âThatâs where we drill down to put in the dynamite,â Tom explained. He suddenly turned his head, listening. âI think I hear my dad calling. Just a second.â He turned and retraced his steps along the ledge until he was out of sight.
âWhereâd he go?â George asked after a moment.
Nancy shrugged. âLetâs not wait for him,â she said. âI can always talk to him later. Right now I want to get back to the car and study these photographs.â
âGood idea,â George said, turning to leave. âI think Iâve seen as much of a quarry as I care to see in one lifetime.â
A sharp, cracking sound came from somewhere overhead. Nancy and George stopped and looked up at the rocky outcropping. To her dismay, Nancy saw that part of the face of the wall had dislodged and was sliding down into the gravel pit. A large boulder was jarred loose by the falling earth and began tumbling down the wall. Tumbling straight toward Nancy and George!
Chapter
Seven
L OOK OUT, G EORGE !â Nancy cried out. The boulder was almost upon them. She sprang forward and pushed George ahead of her on the ledge. Jagged pebbles bit into Nancyâs palm as she and George fell into a sprawling heap on the gravel.
The boulder landed with a sickening thud just inches behind Nancyâs heels. A cloud of dust and fine debris rose from the site.
George was the first to clamber to her feet. âAre you okay, Nan?â she asked anxiously. âIt looks like youâre hurt.â
âIâm okay.â Nancy picked herself up from the dusty ground and gingerly tested her limbs. Shefelt a little tenderness on her palm and knees where the gravel had scraped them when she fell.
The loud, long wail of an emergency alarm siren shattered the air. A handful of quarry workers, some holding half-eaten sandwiches, came running toward the pit. They were led by Tom Kragenâs father. âWhat happened? Are you girls hurt?â Mr. Kragenâs voice was tight with concern.
âWeâre okay, but it was a close call,â said Nancy, whose pulse was still racing. âThat boulder down there almost flattened us.â
âWhereâs Tom?â Anger crept into Mr. Kragenâs tone. âThis areaâs not safe. Did he let you out here without an escort?â
âIâm right here.â Tom appeared behind the group of men who had accompanied Mr. Kragen. âI was out here with them. Then I thought I heard you calling me.â
âYou never leave visitors alone here! Never!â Mr. Kragenâs voice roared with rage. âThese young ladies could have been killed.â
Tom lowered his eyes and poked at the dust with his shoe. âIâm sorry,â he said, not quite meeting Nancyâs eyes.
âWhat would cause a rockslide like that?â Nancy pressed the elder Kragen.
âWe constantly use explosives, which makesfor a very unstable ground environment,â Mr. Kragen explained. âThe boulders you see all around us could let loose any second.â
As if to underscore Mr. Kragenâs words, the earth under their feet trembled slightly. âLetâs get out of here,â he added quickly.
Tom remained silent as they walked back to the office. Nancy and George refused Mr. Kragenâs offer of a cup of hot tea and said goodbye.
âWow, that was too close.â George shook her head as they climbed back into Nancyâs car. âTomâs father was really giving him a hard time for leaving us there alone, wasnât he?â
âYes, but Tom didnât seem too upset about it,â Nancy commented.
âI can see wheels turning behind those blue eyes, Nan,â George said shrewdly. âWhat are you thinking about all