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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails14jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=15Page 15button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page15jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=15 data-page=15 class=ts-thumb lazyload alt=Page 15: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails15jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=16Page 16button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page16jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=16 data-page=16 class=ts-thumb lazyload alt=Page 16: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails20jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=21Page 21button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page21jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=21 data-page=21 class=ts-thumb lazyload alt=Page 21: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails21jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=22Page 22button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page22jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=22 data-page=22 class=ts-thumb lazyload alt=Page 22: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails26jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=27Page 27button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page27jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=27 data-page=27 class=ts-thumb lazyload alt=Page 27: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails32jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=33Page 33button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page33jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=33 data-page=33 class=ts-thumb lazyload alt=Page 33: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails38jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=39Page 39button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page39jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=39 data-page=39 class=ts-thumb lazyload alt=Page 39: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails44jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=45Page 45button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page45jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=45 data-page=45 class=ts-thumb lazyload alt=Page 45: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails50jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=51Page 51button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page51jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=51 data-page=51 class=ts-thumb lazyload alt=Page 51: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails62jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=63Page 63button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page63jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=63 data-page=63 class=ts-thumb lazyload alt=Page 63: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails68jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=69Page 69button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page69jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=69 data-page=69 class=ts-thumb lazyload alt=Page 69: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails92jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=93Page 93button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page93jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=93 data-page=93 class=ts-thumb lazyload alt=Page 93: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails104jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=105Page 105button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page105jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=105 data-page=105 class=ts-thumb lazyload alt=Page 105: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails110jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=111Page 111button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page111jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=111 data-page=111 class=ts-thumb lazyload alt=Page 111: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails122jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=123Page 123button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page123jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=123 data-page=123 class=ts-thumb lazyload alt=Page 123: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails128jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=129Page 129button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page129jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=129 data-page=129 class=ts-thumb lazyload alt=Page 129: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails134jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=135Page 135button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page135jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=135 data-page=135 class=ts-thumb lazyload alt=Page 135: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5thumbnails140jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=141Page 141button div class=ts-imagea href=https:reader043vdocumentsnetreader043viewer20220226035b5c0a1a7f8b9a2d458edbafhtml5page141jpg target=_blank img data-url=usbr-blow-counts-are-adjusted-to-the-equivalent-blow-count-by-simple-proportionhtmlpage=141 data-page=141 class=ts-thumb lazyload alt=Page 141: usbrgovusbrgovssledamsafetyTechDevDSOTechDevDSO-07-09pdf · Blow counts are adjusted to the equivalent blow count by simple proportion with the standard 60-percent energy loading=lazy 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