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  <import namespace="http://fasb.org/srt-roles/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-roles-2024.xsd" />
  <import namespace="http://fasb.org/srt-types/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-types-2024.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" />
  <import namespace="http://xbrl.sec.gov/stpr/2024" schemaLocation="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd" />
  <import namespace="http://fasb.org/us-roles/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-roles-2024.xsd" />
  <import namespace="http://fasb.org/us-types/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-types-2024.xsd" />
  <import namespace="http://fasb.org/srt/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd" />
  <import namespace="http://fasb.org/us-gaap/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd" />
  <import namespace="http://xbrl.sec.gov/ecd/2024" schemaLocation="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd" />
  <element id="ltbr_OtherOperatingIncomeAbstract" name="OtherOperatingIncomeAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ContributedServicesResearchAndDevelopmentIncome" name="ContributedServicesResearchAndDevelopmentIncome" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharesIssuedNetOfShareSettlementForWithholdingTaxesPaidUponVestingOfRestrictedStockAwardsShares" name="SharesIssuedNetOfShareSettlementForWithholdingTaxesPaidUponVestingOfRestrictedStockAwardsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharesIssuedNetOfShareSettlementForWithholdingTaxesPaidUponVestingOfRestrictedStockAwardsAmount" name="SharesIssuedNetOfShareSettlementForWithholdingTaxesPaidUponVestingOfRestrictedStockAwardsAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharesIssuedRegisteredOfferingsNetOfOfferingCostsOfShares" name="SharesIssuedRegisteredOfferingsNetOfOfferingCostsOfShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharesIssuedRegisteredOfferingsNetOfOfferingCostsOfAmount" name="SharesIssuedRegisteredOfferingsNetOfOfferingCostsOfAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_IncreaseDecreaseInPrepaidProjectCostsAndOtherLongTermAssets" name="IncreaseDecreaseInPrepaidProjectCostsAndOtherLongTermAssets" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_CashPaidDuringThePeriodAbstract" name="CashPaidDuringThePeriodAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_PaymentOfAccruedLiabilitiesWithCommonStock" name="PaymentOfAccruedLiabilitiesWithCommonStock" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_CommonStockIssuedForConsultingServices" name="CommonStockIssuedForConsultingServices" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_InsiderTradingArrLineItemsAbstract" name="InsiderTradingArrLineItemsAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_PrepaidProjectCostsAndOtherLongTermAssetsDisclosureTextBlock" name="PrepaidProjectCostsAndOtherLongTermAssetsDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_DefinedContributionRetirementPlanDisclosureTextBlock" name="DefinedContributionRetirementPlanDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ComprehensiveLossPolicyTextBlock" name="ComprehensiveLossPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_RecentAccountingPronouncementsPolicyTextBlock" name="RecentAccountingPronouncementsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ScheduleOfOutstandingRSUTableTextBlock" name="ScheduleOfOutstandingRSUTableTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ResearchAndDevelopmentPercentage" name="ResearchAndDevelopmentPercentage" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_OfficeLeaseTerms" name="OfficeLeaseTerms" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_PrepaidProjectCostsAddition" name="PrepaidProjectCostsAddition" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_AccruedLiabilitiesForResearchAndDevelopmrntExpense" name="AccruedLiabilitiesForResearchAndDevelopmrntExpense" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_AccruedLiabilitiesForAccountingAndConsultingExpense" name="AccruedLiabilitiesForAccountingAndConsultingExpense" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_LeasePaymentUnderNonCancellableOperatingLeases" name="LeasePaymentUnderNonCancellableOperatingLeases" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_LesseeOperatingLeaseTerm" name="LesseeOperatingLeaseTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_OperatingCashPaymentsMilestones" name="OperatingCashPaymentsMilestones" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_EngineeringStudyFees" name="EngineeringStudyFees" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_PatentImpairmentProvision" name="PatentImpairmentProvision" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ResearchAndDevelopmentExpensesCapitalizedForTax" name="ResearchAndDevelopmentExpensesCapitalizedForTax" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_EffectiveIncomeTaxRateReconciliationFederalTax" name="EffectiveIncomeTaxRateReconciliationFederalTax" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_EffectiveTaxRateForFederalPercentage" name="EffectiveTaxRateForFederalPercentage" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_EffectiveTaxRateForStatePercentage" name="EffectiveTaxRateForStatePercentage" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_FederalResearchAndDevelopmentExpiryPeriod" name="FederalResearchAndDevelopmentExpiryPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedWeightedAverageExercisePrice" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm" name="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTermEndingFF" name="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTermEndingFF" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTermVested" name="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTermVested" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTermOptionsExercisable" name="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTermOptionsExercisable" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicValueOutstanding" name="SharebasedCompensationSharesOptionsAggregateIntrinsicValueOutstanding" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicValueExercised" name="SharebasedCompensationSharesOptionsAggregateIntrinsicValueExercised" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicsValueOutstanding" name="SharebasedCompensationSharesOptionsAggregateIntrinsicsValueOutstanding" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicValueVestedAndExpectedToVest" name="SharebasedCompensationSharesOptionsAggregateIntrinsicValueVestedAndExpectedToVest" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicValueOptionsExercisable" name="SharebasedCompensationSharesOptionsAggregateIntrinsicValueOptionsExercisable" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding94" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding94" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicValueGranted" name="SharebasedCompensationSharesOptionsAggregateIntrinsicValueGranted" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicValueVested" name="SharebasedCompensationSharesOptionsAggregateIntrinsicValueVested" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicValueForfeited" name="SharebasedCompensationSharesOptionsAggregateIntrinsicValueForfeited" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationSharesOptionsAggregateIntrinsicValueOutstandings" name="SharebasedCompensationSharesOptionsAggregateIntrinsicValueOutstandings" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_CompensationExpensesDuringPeriod" name="CompensationExpensesDuringPeriod" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_CommonSharesIssuancesEquityGrant" name="CommonSharesIssuancesEquityGrant" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_EquityGrantValue" name="EquityGrantValue" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_FairValueOfCommonStockPerShare" name="FairValueOfCommonStockPerShare" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_IntrinsicFairValueCommonStockPerShare" name="IntrinsicFairValueCommonStockPerShare" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_RSAFairValue" name="RSAFairValue" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_CommonSharesEquityGrantPricePerShares" name="CommonSharesEquityGrantPricePerShares" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGranted" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGranted" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_UnrecognizedCompensationExpenseDuringThePeriod" name="UnrecognizedCompensationExpenseDuringThePeriod" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_SharebasedCompensationArrangementBySharebasedPaymentAwardExpectedTerm" name="SharebasedCompensationArrangementBySharebasedPaymentAwardExpectedTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_WeightedAverageSharePrice" name="WeightedAverageSharePrice" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_CommonStockValuedGrantDatePricePerShare" name="CommonStockValuedGrantDatePricePerShare" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_FairValue" name="FairValue" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_DescriptionRelatedToShareCompensation" name="DescriptionRelatedToShareCompensation" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_CommonStockEquivalentsOutstandingShares" name="CommonStockEquivalentsOutstandingShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_MarketOfferingsDisclosureDescription" name="MarketOfferingsDisclosureDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_FutureIssuanceOfShare" name="FutureIssuanceOfShare" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_DescriptionOfEquityIncentivePlan" name="DescriptionOfEquityIncentivePlan" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_StockOptionExercisePrice" name="StockOptionExercisePrice" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ProceedsFromStockIssuances" name="ProceedsFromStockIssuances" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_MembershipFee" name="MembershipFee" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_OperatingExpensesDuesPaid" name="OperatingExpensesDuesPaid" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_InlProject" name="InlProject" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_RomaniaFeasibilityStudy" name="RomaniaFeasibilityStudy" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_CentrusEnergyFeedStudy" name="CentrusEnergyFeedStudy" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_ResearchAndDevelopmentExpenseNet" name="ResearchAndDevelopmentExpenseNet" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="ltbr_OperatingNetIncomeLossFromSegmentsToConsolidated" name="OperatingNetIncomeLossFromSegmentsToConsolidated" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_DescriptionOfAnAmendmentToTheLightbridgeCorporation" name="DescriptionOfAnAmendmentToTheLightbridgeCorporation" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_InsiderTradingArrangementsAbstract" name="InsiderTradingArrangementsAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_BasisOfPresentationSummaryOfSignificantAccountingPoliciesAndNatureOfOperations" name="BasisOfPresentationSummaryOfSignificantAccountingPoliciesAndNatureOfOperations" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
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  <element id="ltbr_NoteIncomeTaxesAbstract" name="NoteIncomeTaxesAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="ltbr_DefinedContribution401KRetirementPlanAbstract" name="DefinedContribution401KRetirementPlanAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
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  <element name="TreasuryBillsLevelTwoMember" id="ltbr_TreasuryBillsLevelTwoMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="TreasuryBillsLevelThreeMember" id="ltbr_TreasuryBillsLevelThreeMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="BattelleEnergyAllianceLLCMember" id="ltbr_BattelleEnergyAllianceLLCMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
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  <element name="RestrictedStockAwardsSummaryMember" id="ltbr_RestrictedStockAwardsSummaryMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="RestrictedStockUnitsRSAMember" id="ltbr_RestrictedStockUnitsRSAMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="TwentyTwentyThreeTransactionsMember" id="ltbr_TwentyTwentyThreeTransactionsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="MiniimumMember" id="ltbr_MiniimumMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
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  <element name="RestrictedStockAwardActivityMember" id="ltbr_RestrictedStockAwardActivityMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="CentrusEnergyMember" id="ltbr_CentrusEnergyMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="CRADAAgreementMember" id="ltbr_CRADAAgreementMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="BoardOfDirectorsMember" id="ltbr_BoardOfDirectorsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
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  <element name="CommonShareIssuancesMember" id="ltbr_CommonShareIssuancesMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
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  <element name="RestrictedStockAwardMember" id="ltbr_RestrictedStockAwardMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="PrepaidExpenseAndOtherCurrentAssetMember" id="ltbr_PrepaidExpenseAndOtherCurrentAssetMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="OptionsMember" id="ltbr_OptionsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="TwoThousandTwentyEquityIncentivePlanMember" id="ltbr_TwoThousandTwentyEquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="AvailableForSaleSecuritiesMember" id="ltbr_AvailableForSaleSecuritiesMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="WeDontHaveTimeIncMember" id="ltbr_WeDontHaveTimeIncMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="CODMMember" id="ltbr_CODMMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="TwoConsultantsMember" id="ltbr_TwoConsultantsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="GAINMember" id="ltbr_GAINMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="INLMember" id="ltbr_INLMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
</schema>
